{"id":19053,"date":"2025-07-06T22:25:05","date_gmt":"2025-07-06T15:25:05","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=19053"},"modified":"2025-07-07T15:05:09","modified_gmt":"2025-07-07T08:05:09","slug":"luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/","title":{"rendered":"L\u1ef1c h\u1ea5p d\u1eabn l\u00e0 g\u00ec? \u0110\u1ecbnh lu\u1eadt, \u0111\u1eb7c \u0111i\u1ec3m &amp; h\u01b0\u1edbng d\u1eabn gi\u1ea3i b\u00e0i t\u1eadp chi ti\u1ebft"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Trong_luc_la_gi\" >Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Ai_da_phat_hien_ra_trong_luc\" >Ai \u0111\u00e3 ph\u00e1t hi\u1ec7n ra tr\u1ecdng l\u1ef1c?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Dac_diem_cua_trong_luc\" >\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a tr\u1ecdng l\u1ef1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Dinh_luat_trong_luc_la_gi\" >\u0110\u1ecbnh lu\u1eadt tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Noi_dung_cua_luat_phap_cua_moi_thu\" >N\u1ed9i dung c\u1ee7a lu\u1eadt ph\u00e1p c\u1ee7a m\u1ecdi th\u1ee9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Phuong_trinh_cua_dinh_luat_cua_tat_ca_cac_doi_tuong_hap_dan\" >Ph\u01b0\u01a1ng tr\u00ecnh c\u1ee7a \u0111\u1ecbnh lu\u1eadt c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng h\u1ea5p d\u1eabn<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Trong_luc_la_mot_truong_hop_trong_luc_rieng_biet\" >Tr\u1ecdng l\u1ef1c l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p tr\u1ecdng l\u1ef1c ri\u00eang bi\u1ec7t<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Trong_luc_la_gi-2\" >Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Cong_thuc_tinh_trong_luc\" >C\u00f4ng th\u1ee9c t\u00ednh tr\u1ecdng l\u1ef1c<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Ap_dung_luat_cua_moi_thu\" >\u00c1p d\u1ee5ng lu\u1eadt c\u1ee7a m\u1ecdi th\u1ee9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Mot_so_bai_tap_ve_trong_luc_va_luat_trong_luc_LY_10\" >M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 tr\u1ecdng l\u1ef1c v\u00e0 lu\u1eadt tr\u1ecdng l\u1ef1c (LY 10)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-hap-dan-la-gi-dinh-luat-dac-diem-huong-dan-giai-bai-tap-chi-tiet\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">B\u1ea1n c\u00f3 th\u1ec3 kh\u00f4ng bi\u1ebft, \u0111\u1ec3 gi\u1eef cho m\u1eb7t tr\u0103ng di chuy\u1ec3n xung quanh m\u1eb7t tr\u1eddi nh\u1edd v\u00e0o tr\u1ecdng l\u1ef1c gi\u1eefa tr\u00e1i \u0111\u1ea5t v\u00e0 m\u1eb7t tr\u0103ng. V\u1eady tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 \u0111\u1ecbnh lu\u1eadt c\u1ee7a tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? N\u1ed9i dung trong b\u00e0i vi\u1ebft sau, kh\u1ec9 s\u1ebd tr\u1ea3 l\u1eddi chi ti\u1ebft nh\u1ea5t.<\/p>\n<p>                                                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img_default\/monkey3.png\" alt=\"\"><\/p>\n<p class=\"title\">H\u00e0ng tri\u1ec7u tr\u1ebb em \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c k\u1ef9 n\u0103ng ng\u00f4n ng\u1eef c\u1ee7a ch\u00fang th\u00f4ng qua c\u00e1c \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp c\u1ee7a kh\u1ec9<\/p>\n<p class=\"description\">\u0110\u0103ng k\u00fd ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u1ec1 c\u00e1c s\u1ea3n ph\u1ea9m v\u00e0 tuy\u1ebfn h\u1ecdc h\u1ecdc cho tr\u1ebb em.<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra t\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a b\u1ea1n *Vui l\u00f2ng ki\u1ec3m tra s\u1ed1 \u0111i\u1ec7n tho\u1ea1i h\u01a1n 2.000 t\u1eeb &amp; 6.000 c\u00e2u ti\u1ebfng Anh \u0111\u1ec3 ph\u00e1t tri\u1ec3n to\u00e0n di\u1ec7n 4 k\u1ef9 n\u0103ng ti\u1ebfng Anh t\u1ed1t &#8211; ti\u1ebfng Anh theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n \u0111\u1ea1i ph\u00e1t tri\u1ec3n kh\u1ea3 n\u0103ng EQ &amp; Vi\u1ec7t Nam *B\u1ea1n ch\u01b0a ch\u1ecdn b\u1ea5t k\u1ef3 m\u1ee5c n\u00e0o! \u0110\u0103ng k\u00fd t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Trong_luc_la_gi\"><\/span>Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: <\/em><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\"><em>Nh\u1edd tr\u1ecdng l\u1ef1c c\u1ee7a tr\u00e1i \u0111\u1ea5t, c\u00e1c v\u1ec7 tinh nh\u00e2n t\u1ea1o c\u00f3 th\u1ec3 xoay quanh tr\u00e1i \u0111\u1ea5t<\/em><\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\"><em>Nh\u1edd tr\u1ecdng l\u1ef1c, ch\u00fang ta c\u00f3 th\u1ec3 th\u1ea3 m\u1ed9t v\u1eadt nh\u01b0 \u0111\u00e1, b\u00fat, chai n\u01b0\u1edbc, &#8230; r\u01a1i t\u1eeb tr\u00ean xu\u1ed1ng \u0111\u1ea5t.<\/em><\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">T\u1eeb hai v\u00ed d\u1ee5 tr\u00ean, ch\u00fang ta c\u00f3 th\u1ec3 v\u1ebd \u0111\u1ecbnh ngh\u0129a v\u1ec1 tr\u1ecdng l\u1ef1c:<\/p>\n<p dir=\"ltr\">Tr\u1ecdng l\u1ef1c \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 m\u1ed9t l\u1ef1c t\u1eeb xa, qua kh\u00f4ng gian gi\u1eefa hai ho\u1eb7c nhi\u1ec1u \u0111\u1ed1i t\u01b0\u1ee3ng. Trong v\u1eadt l\u00fd, tr\u1ecdng l\u1ef1c l\u00e0 s\u1ef1 h\u1ea5p d\u1eabn gi\u1eefa v\u1eadt ch\u1ea5t. Tr\u1ecdng l\u1ef1c c\u00f3 \u0111\u1ed9 l\u1edbn t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a ch\u00fang. <\/p>\n<p dir=\"ltr\">Th\u00f4ng qua nghi\u00ean c\u1ee9u, tr\u1ecdng l\u1ef1c c\u1ee7a tr\u00e1i \u0111\u1ea5t \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1ecdi th\u1ee9 v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng. Do \u0111\u00f3, m\u1eb7c d\u00f9 tr\u00e1i \u0111\u1ea5t \u0111ang quay, ch\u00fang ta v\u1eabn c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111\u1ee9ng tr\u00ean b\u1ec1 m\u1eb7t tr\u00e1i \u0111\u1ea5t m\u00e0 kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 hi\u1ec7u \u1ee9ng n\u00e0o kh\u00e1c.<\/p>\n<p dir=\"ltr\">Ngo\u00e0i ra, tr\u1ecdng l\u1ef1c c\u0169ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 l\u1ef1c gi\u1eefa c\u00e1c h\u00e0nh tinh trong qu\u1ef9 \u0111\u1ea1o c\u1ee7a ch\u00fang ta xoay quanh m\u1eb7t tr\u1eddi, tr\u00e1i \u0111\u1ea5t v\u00e0 m\u1eb7t tr\u0103ng trong qu\u1ef9 \u0111\u1ea1o xoay quanh tr\u00e1i \u0111\u1ea5t. Tr\u1ecdng l\u1ef1c gi\u00fap ch\u00fang ta gi\u1ea3i th\u00edch s\u1ef1 h\u00ecnh th\u00e0nh c\u1ee7a th\u1ee7y tri\u1ec1u v\u00e0 nhi\u1ec1u hi\u1ec7n t\u01b0\u1ee3ng trong t\u1ef1 nhi\u00ean. <\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-hap-dan-1.jpg\" alt=\"Tr\u1ecdng l\u1ef1c t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn m\u1ecdi th\u1ee9 trong v\u0169 tr\u1ee5. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"500\"><\/p>\n<p dir=\"ltr\">L\u01afU \u00dd: Khi kh\u00f4ng c\u00f3 tr\u1ecdng l\u1ef1c, n\u00f3 s\u1ebd d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng kh\u00f4ng c\u00f3 t\u00ednh kh\u00f4ng ch\u00ednh x\u00e1c &#8211; hi\u1ec7n t\u01b0\u1ee3ng m\u00e0 m\u1ecdi ng\u01b0\u1eddi v\u00e0 m\u1ecdi th\u1ee9 s\u1ebd b\u1ecb tr\u00f4i, tr\u00f4i n\u1ed5i trong kh\u00f4ng gian. Kh\u00f4ng c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng th\u01b0\u1eddng x\u1ea3y ra khi kh\u00e1ch du l\u1ecbch di chuy\u1ec3n ra kh\u1ecfi tr\u00e1i \u0111\u1ea5t \u0111\u1ebfn c\u00e1c v\u0169 tr\u1ee5 kh\u00e1c. <\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ai_da_phat_hien_ra_trong_luc\"><\/span>Ai \u0111\u00e3 ph\u00e1t hi\u1ec7n ra tr\u1ecdng l\u1ef1c? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">T\u1ea1i khu v\u01b0\u1eddn c\u1ee7a Woolsthorpe, Lincolnshire, v\u00e0o n\u0103m 1666, Isaac Newton \u0111\u00e3 ph\u00e1t hi\u1ec7n ra tr\u1ecdng l\u1ef1c khi anh ta ng\u1ed3i d\u01b0\u1edbi g\u1ed1c c\u00e2y t\u00e1o v\u00e0 b\u1ecb m\u1ed9t qu\u1ea3 t\u00e1o \u0111\u00e1nh. Ch\u1eafc ch\u1eafn nhi\u1ec1u b\u1ea1n \u0111\u00e3 nghe c\u00e2u chuy\u1ec7n n\u00e0y, th\u1eadm ch\u00ed n\u00f3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a n\u1ed9i dung c\u1ee7a s\u00e1ch gi\u00e1o khoa v\u1eadt l\u00fd. <\/p>\n<p dir=\"ltr\">K\u1ebft qu\u1ea3 c\u1ee7a vi\u1ec7c ph\u00e1t hi\u1ec7n ra tr\u1ecdng l\u1ef1c kh\u00f4ng ch\u1ec9 xu\u1ea5t ph\u00e1t t\u1eeb th\u1eddi \u0111i\u1ec3m Apple r\u01a1i, m\u00e0 n\u00f3 c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o qu\u00e1 tr\u00ecnh nghi\u00ean c\u1ee9u v\u00e0 l\u00e0m vi\u1ec7c ch\u0103m ch\u1ec9 c\u1ee7a anh ta. Anh ta h\u1ecfi t\u1ea1i sao khi qu\u1ea3 t\u00e1o r\u01a1i ra kh\u1ecfi c\u00e0nh c\u00e2y, ch\u00fang s\u1ebd ng\u00e3 th\u1eb3ng xu\u1ed1ng \u0111\u1ea5t thay v\u00ec bay l\u00ean ho\u1eb7c theo chi\u1ec1u ngang. V\u00e0 ch\u00ednh Newton \u0111\u00e3 tr\u1ea3 l\u1eddi \u0111i\u1ec1u n\u00e0y v\u1edbi c\u00e2u tr\u1ea3 l\u1eddi r\u1eb1ng tr\u00e1i \u0111\u1ea5t \u0111\u00e3 h\u00fat Apple v\u1edbi m\u1ed9t l\u1ef1c l\u01b0\u1ee3ng kh\u00f4ng \u0111\u01b0\u1ee3c tr\u1ea3 l\u01b0\u01a1ng.<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-hap-dan-2.jpg\" alt=\"Isaac Newton \u0111\u00e3 ph\u00e1t hi\u1ec7n ra tr\u1ecdng l\u1ef1c v\u00e0o n\u0103m 1666. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"550\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dac_diem_cua_trong_luc\"><\/span>\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a tr\u1ecdng l\u1ef1c <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Tr\u1ecdng l\u1ef1c c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sau: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">L\u00e0 \u0111i\u1ec3m thu h\u00fat<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Tr\u1ecdng t\u00e2m c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng (ch\u1ea5t) l\u00e0 n\u01a1i h\u1ea5p d\u1eabn<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">D\u00f2ng \u0111i qua trung t\u00e2m c\u1ee7a b\u1ea5t k\u1ef3 \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o l\u00e0 gi\u00e1 c\u1ee7a tr\u1ecdng l\u1ef1c <\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dinh_luat_trong_luc_la_gi\"><\/span>\u0110\u1ecbnh lu\u1eadt tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd l\u1edbp 10, h\u1ecd s\u1ebd h\u1ecdc v\u00e0 l\u00e0m quen v\u1edbi tr\u1ecdng l\u1ef1c. K\u00e8m theo \u0111\u00f3 l\u00e0 lu\u1eadt tr\u1ecdng l\u1ef1c c\u1ea7n \u0111\u01b0\u1ee3c l\u00e0m ch\u1ee7. C\u1ee5 th\u1ec3:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Noi_dung_cua_luat_phap_cua_moi_thu\"><\/span>N\u1ed9i dung c\u1ee7a lu\u1eadt ph\u00e1p c\u1ee7a m\u1ecdi th\u1ee9 <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Tuy\u00ean b\u1ed1 c\u1ee7a Newton v\u1ec1 \u0111\u1ecbnh lu\u1eadt tr\u1ecdng l\u1ef1c \u0111\u01b0\u1ee3c n\u00f3i r\u1eb1ng trong v\u0169 tr\u1ee5, m\u1ed7i h\u1ea1t gi\u1ed1ng h\u00fat t\u1eebng h\u1ea1t kh\u00e1c nhau so v\u1edbi t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a ch\u00fang. M\u1eb7t kh\u00e1c, ch\u00fang s\u1ebd t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi b\u00ecnh ph\u01b0\u01a1ng kho\u1ea3ng c\u00e1ch gi\u1eefa t\u00e2m tr\u00ed. Vi\u1ec7c ph\u00e1t hi\u1ec7n ra l\u00fd thuy\u1ebft n\u00e0y \u0111\u01b0\u1ee3c coi l\u00e0 s\u1ef1 th\u1ed1ng nh\u1ea5t l\u1edbn \u0111\u1ea7u ti\u00ean. L\u00fd do l\u00e0 n\u00f3 l\u00e0 m\u1ed9t c\u1ed9t m\u1ed1c quan tr\u1ecdng cho s\u1ef1 th\u1ed1ng nh\u1ea5t c\u1ee7a c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng h\u1ea5p d\u1eabn \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 tr\u01b0\u1edbc Tr\u00e1i \u0111\u1ea5t v\u1edbi c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng thi\u00ean v\u0103n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn.<\/p>\n<p dir=\"ltr\">Lu\u1eadt tr\u1ecdng l\u1ef1c c\u1ee7a Newton \u0111\u00e3 kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng m\u1ecdi th\u1ee9 trong v\u0169 tr\u1ee5 \u0111\u1ec1u mang \u0111i\u1ec3m thu h\u00fat c\u1ee7a Tr\u00e1i \u0111\u1ea5t v\u00e0 thu h\u00fat l\u1eabn nhau b\u1eb1ng m\u1ed9t l\u1ef1c l\u01b0\u1ee3ng g\u1ecdi l\u00e0 Lu\u1eadt h\u1ea5p d\u1eabn. Theo \u0111\u00f3, tr\u1ecdng l\u1ef1c gi\u1eefa hai \u0111i\u1ec3m ho\u1eb7c hai \u0111\u1ed1i t\u01b0\u1ee3ng t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi b\u00ecnh ph\u01b0\u01a1ng kho\u1ea3ng c\u00e1ch gi\u1eefa ch\u00fang v\u00e0 t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi s\u1ea3n ph\u1ea9m c\u1ee7a hai kh\u1ed1i<\/p>\n<p dir=\"ltr\">L\u01b0u \u00fd: Lu\u1eadt c\u1ee7a m\u1ecdi th\u1ee9 ch\u1ec9 \u0111\u00fang trong tr\u01b0\u1eddng h\u1ee3p kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 r\u1ea5t l\u1edbn so v\u1edbi k\u00edch th\u01b0\u1edbc c\u1ee7a ch\u00fang. <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Phuong_trinh_cua_dinh_luat_cua_tat_ca_cac_doi_tuong_hap_dan\"><\/span>Ph\u01b0\u01a1ng tr\u00ecnh c\u1ee7a \u0111\u1ecbnh lu\u1eadt c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng h\u1ea5p d\u1eabn <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">H\u1ec7 th\u1ed1ng: <\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/phuong-trinh-dinh-luat-van-vat-hap-dan.JPG\" alt=\"\" width=\"644\" height=\"119\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">FHD: Tr\u1ecdng l\u1ef1c<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M1, M2 l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a hai \u0111i\u1ec3m<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">R l\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa h\u1ecd<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chu-thich.JPG\" alt=\"\" width=\"201\" height=\"36\">\u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u1eb1ng s\u1ed1 h\u1ea5p d\u1eabn<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Trong_luc_la_mot_truong_hop_trong_luc_rieng_biet\"><\/span>Tr\u1ecdng l\u1ef1c l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p tr\u1ecdng l\u1ef1c ri\u00eang bi\u1ec7t <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Trong_luc_la_gi-2\"><\/span>Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ed9 h\u1ea5p d\u1eabn c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 tr\u1ecdng l\u1ef1c gi\u1eefa v\u1eadt th\u1ec3 v\u00e0 tr\u00e1i \u0111\u1ea5t. Tr\u1ecdng l\u1ef1c c\u00f3 m\u1ed9t \u0111i\u1ec3m \u1edf trung t\u00e2m c\u1ee7a v\u1eadt th\u1ec3 khi m\u1ed9t v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng m r\u01a1i \u1edf \u0111\u1ed9 cao h so v\u1edbi m\u1eb7t \u0111\u1ea5t. V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, c\u00f3 m\u1ed9t hi\u1ec7u \u1ee9ng P tr\u1ecdng l\u01b0\u1ee3ng tr\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_trong_luc\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh tr\u1ecdng l\u1ef1c <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 l\u1edbn c\u1ee7a tr\u1ecdng l\u1ef1c:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-tinh-trong-luc.JPG\" alt=\"\" width=\"658\" height=\"125\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">m l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng (kg)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M v\u00e0 r l\u1ea7n l\u01b0\u1ee3t l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 b\u00e1n k\u00ednh c\u1ee7a tr\u00e1i \u0111\u1ea5t<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">H l\u00e0 chi\u1ec1u cao t\u1eeb v\u1eadt \u0111\u1ebfn m\u1eb7t \u0111\u1ea5t (M)<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Ch\u00fang ta c\u00f3 P = mg, v\u00ec v\u1eady gia t\u1ed1c r\u01a1i t\u1ef1 do c\u00f3 gia t\u1ed1c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh sau nh\u01b0 sau:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/cong-thuc-gia-toc-roi-tu-do.JPG\" alt=\"\" width=\"679\" height=\"122\"><\/p>\n<p dir=\"ltr\">L\u01b0u \u00fd: N\u1ebfu \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c \u0111\u1eb7t g\u1ea7n m\u1eb7t \u0111\u1ea5t (h &lt;&lt; r) th\u00ec g = (gm)\/r^2<\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ap_dung_luat_cua_moi_thu\"><\/span>\u00c1p d\u1ee5ng lu\u1eadt c\u1ee7a m\u1ecdi th\u1ee9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-hap-dan-3.jpg\" alt=\"Tr\u1ecdng l\u1ef1c lu\u00f4n t\u1ed3n t\u1ea1i xung quanh ch\u00fang ta. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"490\">  <\/p>\n<p dir=\"ltr\">Trong cu\u1ed9c s\u1ed1ng: Ch\u00fang ta c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng nh\u1eadn th\u1ea5y r\u1eb1ng b\u00e0i ti\u1ec3u lu\u1eadn v\u1ec1 tr\u1ecdng l\u1ef1c t\u1ed3n t\u1ea1i xung quanh cu\u1ed9c s\u1ed1ng. V\u00ed d\u1ee5, c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng t\u1ef1 nhi\u00ean nh\u01b0 nh\u1ea3y t\u1eeb tr\u00ean xu\u1ed1ng th\u1ea5p, tuy\u1ebft r\u01a1i t\u1eeb tr\u00ean xu\u1ed1ng, th\u1ea3 b\u1ea5t k\u1ef3 v\u1eadt ph\u1ea9m n\u00e0o, &#8230; <\/p>\n<p dir=\"ltr\">Trong thi\u00ean v\u0103n h\u1ecdc:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Tr\u1ecdng l\u1ef1c c\u1ee7a m\u1eb7t tr\u1eddi l\u00e0 y\u1ebfu t\u1ed1 khi\u1ebfn c\u00e1c h\u00e0nh tinh kh\u00e1c xoay quanh m\u1eb7t tr\u1eddi. Tr\u1ecdng l\u1ef1c \u0111\u00f3ng vai tr\u00f2 l\u00e0 lo\u1ea1i l\u1ef1c chi ph\u1ed1i s\u1ef1 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c c\u01a1 th\u1ec3 t\u1ef1 nhi\u00ean trong h\u1ec7 m\u1eb7t tr\u1eddi v\u00e0 trong to\u00e0n v\u0169 tr\u1ee5.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Nh\u1edd tr\u1ecdng l\u1ef1c, v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi nhau \u0111\u1ec3 t\u1ea1o th\u00e0nh tr\u00e1i \u0111\u1ea5t, m\u1eb7t tr\u1eddi v\u00e0 c\u00e1c thi\u00ean th\u1ec3 kh\u00e1c trong v\u0169 tr\u1ee5. N\u1ebfu kh\u00f4ng c\u00f3 tr\u1ecdng l\u1ef1c, ch\u00fang s\u1ebd \u0111\u01b0\u1ee3c t\u00e1ch ra, t\u1ed3n t\u1ea1i \u1edf nhi\u1ec1u n\u01a1i kh\u00e1c nhau, kh\u00f4ng li\u00ean k\u1ebft v\u1edbi nhau v\u00e0 t\u1ea5t nhi\u00ean s\u1ebd kh\u00f4ng th\u1ec3 c\u00f3 cu\u1ed9c s\u1ed1ng nh\u01b0 b\u00e2y gi\u1edd.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Tr\u1ecdng l\u1ef1c c\u0169ng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 gi\u1eef m\u1eb7t tr\u0103ng tr\u00ean qu\u1ef9 \u0111\u1ea1o quanh tr\u00e1i \u0111\u1ea5t. S\u1ef1 h\u00ecnh th\u00e0nh c\u1ee7a th\u1ee7y tri\u1ec1u v\u00e0 s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng t\u1ef1 nhi\u00ean kh\u00e1c m\u00e0 ch\u00fang t\u00f4i quan s\u00e1t c\u0169ng l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a tr\u1ecdng l\u1ef1c.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">V\u00ed d\u1ee5 th\u1ef1c t\u1ebf: Trong c\u00e1c cu\u1ed9c chi\u1ebfn kh\u00e1ng chi\u1ebfn trong l\u1ecbch s\u1eed x\u00e2y d\u1ef1ng v\u00e0 qu\u1ed1c ph\u00f2ng qu\u1ed1c gia c\u1ee7a qu\u1ed1c gia Vi\u1ec7t Nam, ch\u1eafc ch\u1eafn m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft v\u1ec1 chi\u1ebfn th\u1eafng \u0111\u1ec3 \u0111\u00e1nh b\u1ea1i Qu\u00e2n \u0111\u1ed9i Nam Han tr\u00ean s\u00f4ng Bach Dang v\u00e0o n\u0103m 938 c\u1ee7a NGO Quy. Chi\u1ebfn th\u1eafng n\u00e0y l\u00e0 do ph\u00edch c\u1eafm v\u00e0o \u0111\u1ed1ng s\u00f4ng. <\/p>\n<p dir=\"ltr\">B\u1edfi v\u00ec khi th\u1ee7y tri\u1ec1u d\u00e2ng l\u00ean, n\u01b0\u1edbc s\u1ebd d\u00e2ng l\u00ean, c\u00f3 kh\u1ea3 n\u0103ng bao ph\u1ee7 c\u00e1c c\u1ecdc n\u00e0y. V\u00e0 sau khi th\u1ee7y tri\u1ec1u r\u00fat, m\u1ef1c n\u01b0\u1edbc th\u1ea5p \u0111\u1ec3 l\u1ed9 c\u00e1c ph\u1ea7n s\u1eafc n\u00e9t c\u1ee7a c\u00e1c c\u1ecdc. Nh\u1edd \u0111i\u1ec1u n\u00e0y, nh\u1eefng chi\u1ebfc thuy\u1ec1n c\u1ee7a Qu\u00e2n \u0111\u1ed9i Nam Han \u0111\u00e3 b\u1ecb xuy\u00ean th\u1ee7ng, \u0111\u1ec3 ng\u01b0\u1eddi d\u00e2n c\u1ee7a ch\u00fang t\u00f4i gi\u00e0nh chi\u1ebfn th\u1eafng.<\/p>\n<table style=\"border-collapse: collapse;width: 100%;background-color: #c2e0f4\" border=\"1\">\n<tr>\n<td style=\"width: 98.5189%\">\n<p style=\"text-align: center\">Gi\u00fap con b\u1ea1n h\u1ecdc to\u00e1n k\u1ebft h\u1ee3p v\u1edbi ti\u1ebfng Anh si\u00eau ti\u1ebft ki\u1ec7m ch\u1ec9 tr\u00ean \u1ee9ng d\u1ee5ng to\u00e1n h\u1ecdc kh\u1ec9. V\u1edbi n\u1ed9i dung gi\u1ea3ng d\u1ea1y v\u1ea1n n\u0103ng \u0111\u1ec3 gi\u00fap tr\u1ebb ph\u00e1t tri\u1ec3n t\u01b0 duy n\u00e3o b\u1ed9 v\u00e0 ng\u00f4n ng\u1eef to\u00e0n di\u1ec7n ch\u1ec9 v\u1edbi kho\u1ea3ng 2k\/ng\u00e0y.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia.monkeyuni.net\/upload\/web\/img\/nhantuvanmienphi.png\" alt=\"\" width=\"185\" height=\"36\"><\/p>\n<\/td>\n<\/tr>\n<\/table>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_bai_tap_ve_trong_luc_va_luat_trong_luc_LY_10\"><\/span>M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 tr\u1ecdng l\u1ef1c v\u00e0 lu\u1eadt tr\u1ecdng l\u1ef1c (LY 10) <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp \u0111\u1ec3 gi\u00fap h\u1ecd c\u1ee7ng c\u1ed1 ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 tr\u1ecdng l\u1ef1c v\u00e0 lu\u1eadt h\u1ea5p d\u1eabn c\u1ee7a h\u1ecd.<\/p>\n<p dir=\"ltr\">C\u00e2u 1: M\u1ed9t h\u00f2n \u0111\u00e1 v\u1eabn n\u1eb1m tr\u00ean m\u1eb7t \u0111\u1ea5t, tr\u1ecdng l\u1ef1c c\u1ee7a tr\u00e1i \u0111\u1ea5t t\u00e1c \u0111\u1ed9ng l\u00ean vi\u00ean \u0111\u00e1 c\u00f3 gi\u00e1 tr\u1ecb<\/p>\n<p dir=\"ltr\">A. l\u1edbn h\u01a1n tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a \u0111\u00e1.<\/p>\n<p dir=\"ltr\">B. nh\u1ecf h\u01a1n tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a \u0111\u00e1.<\/p>\n<p dir=\"ltr\">C. b\u1eb1ng tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a \u0111\u00e1<\/p>\n<p dir=\"ltr\">D. b\u1eb1ng 0.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: Ch\u1ecdn C.<\/p>\n<p dir=\"ltr\">Gi\u1ea3i th\u00edch: M\u1ed9t h\u00f2n \u0111\u00e1 n\u1eb1m tr\u00ean m\u1eb7t \u0111\u1ea5t, tr\u1ecdng l\u1ef1c do tr\u00e1i \u0111\u1ea5t tr\u00ean \u0111\u00e1 g\u00e2y ra b\u1eb1ng tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a \u0111\u00e1.<\/p>\n<p dir=\"ltr\">C\u00e2u 2: Hai qu\u1ea3 c\u1ea7u \u0111\u1ed3ng nh\u1ea5t c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 20 kg, kho\u1ea3ng c\u00e1ch gi\u1eefa hai trung t\u00e2m c\u1ee7a ch\u00fang l\u00e0 50 cm, b\u00e1n k\u00ednh 10 cm. Bi\u1ebft r\u1eb1ng h\u1ec7 s\u1ed1 h\u1ea5p d\u1eabn l\u00e0 g = 6,67.10^-11 nm2 \/kg^2. T\u00ednh \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c t\u01b0\u01a1ng t\u00e1c h\u1ea5p d\u1eabn gi\u1eefa ch\u00fang:<\/p>\n<p dir=\"ltr\">A. 1.0672.10^-8 N.<\/p>\n<p dir=\"ltr\">B. 1.0672.10^-6 N.<\/p>\n<p dir=\"ltr\">C. 1.0672.10^-7 N.<\/p>\n<p dir=\"ltr\">D. 1.0672.10^-5 N.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: Ch\u1ecdn c<\/p>\n<p dir=\"ltr\">Gi\u1ea3i th\u00edch: \u00c1p d\u1ee5ng lu\u1eadt tr\u1ecdng l\u1ef1c<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-luc-hap-dan.JPG\" alt=\"\" width=\"432\" height=\"69\"><\/p>\n<p dir=\"ltr\">C\u00e2u 3: Hai qu\u1ea3 c\u1ea7u t\u01b0\u01a1ng t\u1ef1 \u0111\u01b0\u1ee3c \u0111\u1eb7t \u0111\u1ec3 t\u00e2m tr\u00ed l\u00e0 v\u1ec1 r, tr\u1ecdng l\u1ef1c gi\u1eefa ch\u00fang l\u00e0 F. N\u1ebfu m\u1ed9t trong hai h\u00ecnh c\u1ea7u tr\u00ean b\u1eb1ng v\u1edbi m\u1ed9t h\u00ecnh c\u1ea7u \u0111\u1ed3ng nh\u1ea5t kh\u00e1c nh\u01b0ng c\u00f3 b\u00e1n k\u00ednh l\u1edbn h\u01a1n c\u1ee7a hai, v\u1eabn l\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa hai trung t\u00e2m (hai qu\u1ea3 c\u1ea7u m\u00e0 kh\u00f4ng ch\u1ea1m v\u00e0o nhau), \u0111\u1ed9 ch\u00f9ng gi\u1eefa ch\u00f9ng l\u00e0 g\u00ec?<\/p>\n<p dir=\"ltr\">A. 2f.<\/p>\n<p dir=\"ltr\">B. 16f.<\/p>\n<p dir=\"ltr\">C. 8f.<\/p>\n<p dir=\"ltr\">D. 4f.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: Ch\u1ecdn C.<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-luc-hap-dan-1.JPG\" alt=\"\" width=\"659\" height=\"118\"><\/p>\n<p dir=\"ltr\">Duy tr\u00ec kho\u1ea3ng c\u00e1ch gi\u1eefa hai trung t\u00e2m (hai qu\u1ea3 c\u1ea7u kh\u00f4ng ch\u1ea1m v\u00e0o nhau), tr\u1ecdng l\u1ef1c gi\u1eefa ch\u00fang b\u00e2y gi\u1edd l\u00e0:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-luc-hap-dan-2.JPG\" alt=\"\" width=\"310\" height=\"70\"><\/p>\n<p dir=\"ltr\">C\u00e2u 4: Tr\u00ean m\u1eb7t \u0111\u1ea5t, m\u1ed9t v\u1eadt n\u1eb7ng 10n. N\u1ebfu \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c chuy\u1ec3n \u1edf \u0111\u1ed9 cao kho\u1ea3ng r (r l\u00e0 b\u00e1n k\u00ednh c\u1ee7a tr\u00e1i \u0111\u1ea5t), tr\u1ecdng l\u01b0\u1ee3ng b\u1eb1ng<\/p>\n<p dir=\"ltr\">A. 1 N.<\/p>\n<p dir=\"ltr\">B. 2,5 N.<\/p>\n<p dir=\"ltr\">C. 5 N.<\/p>\n<p dir=\"ltr\">D. 10 N.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: Ch\u1ecdn b<\/p>\n<p dir=\"ltr\">Gi\u1ea3i th\u00edch: <\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-luc-hap-dan-3.JPG\" alt=\"\" width=\"657\" height=\"161\"><\/p>\n<p dir=\"ltr\">C\u00e2u 5: Hai t\u00e0u, m\u1ed7i t\u00e0u c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 50 000 t\u1ea5n c\u00e1ch nhau 1km. L\u1ea5y g = 10 m\/s^2. So s\u00e1nh tr\u1ecdng l\u1ef1c gi\u1eefa ch\u00fang v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng 20 g.<\/p>\n<p dir=\"ltr\">A. L\u1edbn h\u01a1n<\/p>\n<p dir=\"ltr\">B. b\u1eb1ng nhau<\/p>\n<p dir=\"ltr\">C. nh\u1ecf h\u01a1n<\/p>\n<p dir=\"ltr\">D. Kh\u00f4ng r\u00f5<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: Ch\u1ecdn C.<\/p>\n<p dir=\"ltr\">Gi\u1ea3i th\u00edch: \u0110\u1ed9 h\u1ea5p d\u1eabn gi\u1eefa hai con t\u00e0u l\u00e0<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-luc-hap-dan-5.JPG\" alt=\"\" width=\"477\" height=\"77\"><\/p>\n<p dir=\"ltr\">Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a tr\u00e1i c\u00e2y c\u00e2n b\u1eb1ng: p = mg = 0,02.10 = 0,2 (n)<\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, p&gt; f<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-luc-hap-dan-6.JPG\" alt=\"\" width=\"652\" height=\"539\"><\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-luc-hap-dan-7.JPG\" alt=\"\" width=\"632\" height=\"466\"><\/p>\n<p dir=\"ltr\">C\u00e2u 8: B\u00e1n k\u00ednh Tr\u00e1i \u0111\u1ea5t l\u00e0 6400km, gia t\u1ed1c tr\u1ecdng l\u1ef1c tr\u00ean m\u1eb7t \u0111\u1ea5t l\u00e0 9,80 m\/s^2. T\u00ednh to\u00e1n t\u1ed1c \u0111\u1ed9 tr\u1ecdng l\u1ef1c \u1edf \u0111\u1ed9 cao 5km v\u00e0 \u1edf c\u00f9ng chi\u1ec1u cao v\u1edbi m\u1ed9t n\u1eeda b\u00e1n k\u00ednh c\u1ee7a tr\u00e1i \u0111\u1ea5t.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi:<\/p>\n<p dir=\"ltr\">Ph\u00e2n t\u00edch v\u1ea5n \u0111\u1ec1:<\/p>\n<p dir=\"ltr\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bai-tap-luc-hap-dan-8.JPG\" alt=\"\" width=\"485\" height=\"217\"><\/p>\n<table style=\"border-collapse: collapse;width: 100%;background-color: #fbeeb8\" border=\"1\">\n<tr>\n<td style=\"width: 98.5189%\">\n<p style=\"text-align: center\">Gi\u1ea3i ph\u00e1p n\u00e0y gi\u00fap tr\u1ebb ph\u00e1t tri\u1ec3n t\u01b0 duy v\u00e0 ng\u00f4n ng\u1eef to\u00e0n di\u1ec7n v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m to\u00e1n h\u1ecdc + Vi\u1ec7t Nam + ti\u1ebfng Anh v\u1edbi gi\u1ea3m gi\u00e1 t\u1edbi 50% ng\u00e0y h\u00f4m nay.<\/p>\n<p style=\"text-align: center\">\n<p><img loading=\"lazy\" decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia.monkeyuni.net\/upload\/web\/img\/dangkyngay.png\" alt=\"\" width=\"185\" height=\"37\"><\/p>\n<\/td>\n<\/tr>\n<\/table>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/p>\n<p dir=\"ltr\">B\u00e0i b\u00e1o tr\u00ean \u0111\u00e3 t\u00f3m t\u1eaft c\u00e1c ki\u1ebfn \u200b\u200bth\u1ee9c c\u1ea7n thi\u1ebft li\u00ean quan \u0111\u1ebfn tr\u1ecdng l\u1ef1c v\u00e0 lu\u1eadt h\u1ea5p d\u1eabn. Hy v\u1ecdng r\u1eb1ng, v\u1edbi th\u00f4ng tin \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef, h\u1ecd c\u00f3 th\u1ec3 t\u1ef1 h\u1ecdc v\u00e0 h\u1ecdc hi\u1ec7u qu\u1ea3.<\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n c\u00f3 th\u1ec3 kh\u00f4ng bi\u1ebft, \u0111\u1ec3 gi\u1eef cho m\u1eb7t tr\u0103ng di chuy\u1ec3n xung quanh m\u1eb7t tr\u1eddi nh\u1edd v\u00e0o tr\u1ecdng l\u1ef1c gi\u1eefa tr\u00e1i \u0111\u1ea5t v\u00e0 m\u1eb7t tr\u0103ng. V\u1eady tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 \u0111\u1ecbnh lu\u1eadt c\u1ee7a tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? N\u1ed9i dung trong b\u00e0i vi\u1ebft sau, kh\u1ec9 s\u1ebd tr\u1ea3 l\u1eddi chi ti\u1ebft nh\u1ea5t&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-19053","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19053","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=19053"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19053\/revisions"}],"predecessor-version":[{"id":24565,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/19053\/revisions\/24565"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=19053"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=19053"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=19053"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}