{"id":18839,"date":"2025-07-06T16:50:05","date_gmt":"2025-07-06T09:50:05","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=18839"},"modified":"2025-07-07T00:36:00","modified_gmt":"2025-07-06T17:36:00","slug":"the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/","title":{"rendered":"Th\u1ebf n\u0103ng l\u00e0 g\u00ec? T\u1ed5ng h\u1ee3p c\u00e1c d\u1ea1ng th\u1ebf n\u0103ng v\u00e0 c\u00f4ng th\u1ee9c t\u00ednh (d\u1ec5 hi\u1ec3u nh\u1ea5t)"},"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\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Suc_manh_la_gi\" >S\u1ee9c m\u1ea1nh 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\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Ham_trong_luc_la_gi\" >H\u00e0m 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-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Dinh_nghia_ve_tiem_nang_trong_luc\" >\u0110\u1ecbnh ngh\u0129a v\u1ec1 ti\u1ec1m n\u0103ng tr\u1ecdng l\u1ef1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Cong_thuc_cho_chuc_nang_trong_luc\" >C\u00f4ng th\u1ee9c cho ch\u1ee9c n\u0103ng tr\u1ecdng l\u1ef1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Tiep_xuc_giua_nang_luong_va_gia_tri_cua_trong_luc\" >Ti\u1ebfp x\u00fac gi\u1eefa n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a 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-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Do_dan_hoi_la_gi\" >\u0110\u1ed9 \u0111\u00e0n h\u1ed3i 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-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Cong_viec_cua_luc_dan_hoi\" >C\u00f4ng vi\u1ec7c c\u1ee7a l\u1ef1c \u0111\u00e0n h\u1ed3i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Dinh_nghia_ve_tiem_nang_dan_hoi\" >\u0110\u1ecbnh ngh\u0129a v\u1ec1 ti\u1ec1m n\u0103ng \u0111\u00e0n h\u1ed3i<\/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\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Cong_thuc_cho_chuc_nang_dan_hoi\" >C\u00f4ng th\u1ee9c cho ch\u1ee9c n\u0103ng \u0111\u00e0n h\u1ed3i<\/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\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Nang_luong_tinh_dien_la_gi\" >N\u0103ng l\u01b0\u1ee3ng t\u0129nh \u0111i\u1ec7n 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-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nang-la-gi-tong-hop-cac-dang-the-nang-va-cong-thuc-tinh-de-hieu-nhat\/#Mot_so_bai_tap_chuc_nang_vat_ly_10_voi_cau_tra_loi\" >M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp ch\u1ee9c n\u0103ng v\u1eadt l\u00fd 10 (v\u1edbi c\u00e2u tr\u1ea3 l\u1eddi)<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">Trong c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd, n\u0103ng l\u01b0\u1ee3ng l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong cu\u1ed9c s\u1ed1ng v\u00e0 lu\u00f4n t\u1ed3n t\u1ea1i xung quanh ch\u00fang ta. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng c\u00f3 th\u1ec3 hi\u1ec3u kh\u00e1i ni\u1ec7m v\u00e0 c\u00f4ng th\u1ee9c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ti\u1ec1m n\u0103ng. B\u00e0i vi\u1ebft sau \u0111\u00e2y s\u1ebd t\u00f3m t\u1eaft c\u00e1c ki\u1ebfn \u200b\u200bth\u1ee9c c\u1ea7n thi\u1ebft li\u00ean quan \u0111\u1ebfn ti\u1ec1m n\u0103ng, gi\u00fap h\u1ecd c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng h\u1ecdc t\u1eadp v\u00e0 h\u1ecdc t\u1eadp c\u1ee7a h\u1ecd \u0111\u1ec3 \u00e1p d\u1ee5ng trong h\u1ecdc t\u1eadp v\u00e0 cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y.<\/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<p dir=\"ltr\">Trong c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd, n\u0103ng l\u01b0\u1ee3ng l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong cu\u1ed9c s\u1ed1ng v\u00e0 lu\u00f4n t\u1ed3n t\u1ea1i xung quanh ch\u00fang ta. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng c\u00f3 th\u1ec3 hi\u1ec3u kh\u00e1i ni\u1ec7m v\u00e0 c\u00f4ng th\u1ee9c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ti\u1ec1m n\u0103ng. B\u00e0i vi\u1ebft sau \u0111\u00e2y s\u1ebd t\u00f3m t\u1eaft c\u00e1c ki\u1ebfn \u200b\u200bth\u1ee9c c\u1ea7n thi\u1ebft li\u00ean quan \u0111\u1ebfn ti\u1ec1m n\u0103ng, gi\u00fap h\u1ecd c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng h\u1ecdc t\u1eadp v\u00e0 h\u1ecdc t\u1eadp c\u1ee7a h\u1ecd \u0111\u1ec3 \u00e1p d\u1ee5ng trong h\u1ecdc t\u1eadp v\u00e0 cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Suc_manh_la_gi\"><\/span>S\u1ee9c m\u1ea1nh l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">N\u0103ng l\u01b0\u1ee3ng l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng v\u1eadt l\u00fd quan tr\u1ecdng, bi\u1ec3u hi\u1ec7n kh\u1ea3 n\u0103ng t\u1ea1o ra m\u1ed9t v\u1eadt th\u1ec3 trong m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh. Ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 hi\u1ec3u, n\u0103ng l\u01b0\u1ee3ng l\u00e0 m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng t\u1ed3n t\u1ea1i \u1edf b\u00ean trong v\u1eadt th\u1ec3. <\/p>\n<p dir=\"ltr\">C\u00e1c ti\u1ec1m n\u0103ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m \u0111\u1ed9 co gi\u00e3n c\u1ee7a l\u00f2 xo k\u00e9o d\u00e0i, ti\u1ec1m n\u0103ng h\u1ea5p d\u1eabn c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh d\u1ef1a tr\u00ean kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a n\u00f3 v\u00e0 kho\u1ea3ng c\u00e1ch t\u00ecnh y\u00eau t\u1eeb v\u1ecb tr\u00ed c\u1ee7a n\u00f3 \u0111\u1ebfn trung t\u00e2m c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 kh\u00e1c v\u00e0 ti\u1ec1m n\u0103ng c\u1ee7a \u0111i\u1ec7n t\u00edch trong \u0111i\u1ec7n tr\u01b0\u1eddng. <\/p>\n<p dir=\"ltr\">\u0110\u01a1n v\u1ecb c\u1ee7a n\u0103ng l\u01b0\u1ee3ng l\u00e0 Jun. Bi\u1ec3u t\u01b0\u1ee3ng: J<\/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\/the-nang-1.jpg\" alt=\"N\u0103ng l\u01b0\u1ee3ng l\u00e0 m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng t\u1ed3n t\u1ea1i \u1edf b\u00ean trong v\u1eadt th\u1ec3. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"418\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ham_trong_luc_la_gi\"><\/span>H\u00e0m tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dinh_nghia_ve_tiem_nang_trong_luc\"><\/span>\u0110\u1ecbnh ngh\u0129a v\u1ec1 ti\u1ec1m n\u0103ng tr\u1ecdng l\u1ef1c <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Tr\u1ecdng l\u1ef1c t\u1ed3n t\u1ea1i quanh tr\u00e1i \u0111\u1ea5t. \u0110\u1ed9 h\u1ea5p d\u1eabn x\u1ea3y ra khi m\u1ed9t trong c\u00e1c l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean b\u1ea5t k\u1ef3 v\u1eadt th\u1ec3 n\u00e0o v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng m \u1edf b\u1ea5t k\u1ef3 v\u1ecb tr\u00ed n\u00e0o trong kh\u00f4ng gian hi\u1ec7n c\u00f3.<\/p>\n<p dir=\"ltr\">Ch\u00fang ta c\u00f3 bi\u1ec3u th\u1ee9c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh tr\u1ecdng l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng M kh\u1ed1i: <\/p>\n<p dir=\"ltr\">P = mg (v\u1edbi p v\u00e0 m l\u00e0 hai vect\u01a1, g l\u00e0 gia t\u1ed1c tr\u1ecdng l\u1ef1c, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 gia t\u1ed1c t\u1ef1 do)<\/p>\n<p dir=\"ltr\">Tr\u1ecdng l\u1ef1c c\u1ee7a m\u1ed9t v\u1eadt l\u00e0 lo\u1ea1i n\u0103ng l\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa v\u1eadt th\u1ec3 v\u00e0 tr\u00e1i \u0111\u1ea5t. Ti\u1ec1m n\u0103ng tr\u1ecdng l\u1ef1c ph\u1ee5 thu\u1ed9c v\u00e0o chi\u1ec1u cao c\u1ee7a v\u1eadt th\u1ec3 xu\u1ed1ng \u0111\u1ea5t ho\u1eb7c v\u00e0o b\u1ea5t k\u1ef3 v\u1ecb tr\u00ed n\u00e0o \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0m m\u1ed1c \u0111\u1ec3 t\u00ednh chi\u1ec1u cao.<\/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\/the-nang-2.jpg\" alt=\"Ti\u1ec1m n\u0103ng tr\u1ecdng l\u1ef1c ph\u1ee5 thu\u1ed9c v\u00e0o chi\u1ec1u cao c\u1ee7a v\u1eadt th\u1ec3 xu\u1ed1ng \u0111\u1ea5t. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"482\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_cho_chuc_nang_trong_luc\"><\/span>C\u00f4ng th\u1ee9c cho ch\u1ee9c n\u0103ng tr\u1ecdng l\u1ef1c <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">N\u1ebfu ti\u1ec1m n\u0103ng c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng m, \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf v\u1ecb tr\u00ed c\u00f3 chi\u1ec1u cao Z so v\u1edbi m\u1eb7t \u0111\u1ea5t (trong tr\u1ecdng l\u1ef1c c\u1ee7a tr\u00e1i \u0111\u1ea5t), c\u00f4ng th\u1ee9c l\u00e0:<\/p>\n<table style=\"border-collapse: collapse;width: 100%;border-color: #4e4c50;border-style: solid\" border=\"1\">\n<tr>\n<td style=\"width: 99.0477%;border: 0.5px solid #4e4c50\">\n<p style=\"text-align: center\">Wt = mgz<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">WT l\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng. \u0110\u01a1n v\u1ecb: j<\/p>\n<\/li>\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. \u0110\u01a1n v\u1ecb: Kg<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Z l\u00e0 chi\u1ec1u cao t\u1eeb c\u00e1c v\u1eadt th\u1ec3 xu\u1ed1ng \u0111\u1ea5t. \u0110\u01a1n v\u1ecb: m<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">G l\u00e0 gia t\u1ed1c tr\u1ecdng l\u1ef1c. \u0110\u01a1n v\u1ecb: M\/S2<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">L\u01b0u \u00fd: Ti\u1ec1m n\u0103ng tr\u1ecdng l\u1ef1c l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng v\u00f4 h\u01b0\u1edbng, do \u0111\u00f3 gi\u00e1 tr\u1ecb c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 l\u00e0&gt; 0, = 0 ho\u1eb7c &lt;0.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tiep_xuc_giua_nang_luong_va_gia_tri_cua_trong_luc\"><\/span>Ti\u1ebfp x\u00fac gi\u1eefa n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a tr\u1ecdng l\u1ef1c <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Khi m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng di chuy\u1ec3n trong tr\u1ecdng l\u1ef1c t\u1eeb v\u1ecb tr\u00ed M \u0111\u1ebfn v\u1ecb tr\u00ed N, th\u00ec c\u00f4ng \u0111\u1ee9c c\u1ee7a tr\u1ecdng l\u1ef1c c\u1ee7a v\u1eadt \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi h\u00e0m tr\u1ecdng l\u1ef1c t\u1ea1i M v\u00e0 N.<\/p>\n<p dir=\"ltr\">H\u1ec7 th\u1ed1ng: W (mn) = wt (m) &#8211; wt (n)      <\/p>\n<p dir=\"ltr\">L\u01b0u \u00fd: Trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 trong tr\u1ecdng l\u1ef1c:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi t\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng gi\u1ea3m v\u00e0 kh\u1ea3 n\u0103ng c\u1ee7a v\u1eadt th\u1ec3 gi\u1ea3m, tr\u1ecdng l\u1ef1c c\u1ee7a vi\u1ec7c sinh d\u01b0\u01a1ng (+)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi v\u1eadt th\u1ec3 c\u00f3 v\u1ecb tr\u00ed cao h\u01a1n, n\u0103ng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt th\u1ec3 t\u0103ng l\u00ean, tr\u1ecdng l\u1ef1c c\u1ee7a \u00e2m thanh l\u00e0 \u00e2m (-).<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Do_dan_hoi_la_gi\"><\/span>\u0110\u1ed9 \u0111\u00e0n h\u1ed3i l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_viec_cua_luc_dan_hoi\"><\/span>C\u00f4ng vi\u1ec7c c\u1ee7a l\u1ef1c \u0111\u00e0n h\u1ed3i <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">M\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c sinh ra khi n\u00f3 b\u1ecb bi\u1ebfn d\u1ea1ng. V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, v\u1eadt th\u1ec3 xu\u1ea5t hi\u1ec7n m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng g\u1ecdi l\u00e0 ti\u1ec1m n\u0103ng \u0111\u00e0n h\u1ed3i.<\/p>\n<p dir=\"ltr\">H\u00e3y xem x\u00e9t b\u1ea5t k\u1ef3 l\u00f2 xo n\u00e0o c\u00f3 chi\u1ec1u d\u00e0i L0, \u0111\u1ed9 c\u1ee9ng K, m\u1ed9t \u0111\u1ea7u c\u1ee7a l\u00f2 xo \u0111\u01b0\u1ee3c g\u1eafn v\u00e0o m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng m, \u0111\u1ea7u kia l\u00e0 c\u1ed1 \u0111\u1ecbnh. Bi\u1ebfn d\u1ea1ng l\u00f2 xo, sau \u0111\u00f3 chi\u1ec1u d\u00e0i c\u1ee7a l\u00f2 xo l\u00e0 l = l0 +\u0394L <\/p>\n<p dir=\"ltr\">Theo lu\u1eadt c\u1ee7a HUC, ch\u00fang t\u00f4i x\u00e1c \u0111\u1ecbnh l\u1ef1c \u0111\u00e0n h\u1ed3i t\u00e1c d\u1ee5ng l\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng:<\/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\/luc-dan-hoi.JPG\" alt=\"\" width=\"653\" height=\"95\"><\/p>\n<p dir=\"ltr\">N\u1ebfu ch\u00fang ta ch\u1ecdn h\u01b0\u1edbng t\u00edch c\u1ef1c (+) l\u00e0 s\u1ef1 gia t\u0103ng c\u1ee7a chi\u1ec1u d\u00e0i l\u00f2 xo, \u0111\u1ed9 l\u1edbn c\u1ee7a h\u1ed9i ch\u1ee3:<\/p>\n<p dir=\"ltr\">F = -kl (f l\u00e0 s\u1ed1 l\u01b0\u1ee3ng vector)<\/p>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00f4ng vi\u1ec7c c\u1ee7a l\u1ef1c \u0111\u00e0n h\u1ed3i \u0111\u1ec3 \u0111\u01b0a \u0111\u1ed1i t\u01b0\u1ee3ng tr\u1edf l\u1ea1i v\u1ecb tr\u00ed ban \u0111\u1ea7u (v\u1ecb tr\u00ed c\u1ee7a l\u00f2 xo kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng) 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\/cong-cua-luc-dan-hoi.JPG\" alt=\"\" width=\"143\" height=\"48\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dinh_nghia_ve_tiem_nang_dan_hoi\"><\/span>\u0110\u1ecbnh ngh\u0129a v\u1ec1 ti\u1ec1m n\u0103ng \u0111\u00e0n h\u1ed3i <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">H\u00ecnh th\u1ee9c n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi m\u1ed9t v\u1eadt th\u1ec3 t\u00e1c d\u1ee5ng b\u1edfi l\u1ef1c \u0111\u00e0n h\u1ed3i \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ti\u1ec1m n\u0103ng \u0111\u00e0n h\u1ed3i. <\/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\/the-nang-4.jpg\" alt=\"N\u0103ng l\u01b0\u1ee3ng \u0111\u00e0n h\u1ed3i. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\" height=\"306\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_cho_chuc_nang_dan_hoi\"><\/span>C\u00f4ng th\u1ee9c cho ch\u1ee9c n\u0103ng \u0111\u00e0n h\u1ed3i <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c x\u00e1c \u0111\u1ecbnh ti\u1ec1m n\u0103ng \u0111\u00e0n h\u1ed3i c\u1ee7a l\u00f2 xo \u1edf tr\u1ea1ng th\u00e1i b\u1ecb bi\u1ebfn d\u1ea1ng v\u1edbi \u0111\u1ed9 d\u00e0i c\u1ee7a \u0394L l\u00e0:<\/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-the-nang-dan-hoi.JPG\" alt=\"\" width=\"656\" height=\"102\"><\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">WDH l\u00e0 s\u1ee9c m\u1ea1nh \u0111\u00e0n h\u1ed3i. \u0110\u01a1n v\u1ecb: j<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">K l\u00e0 \u0111\u1ed9 c\u1ee9ng c\u1ee7a m\u00f9a xu\u00e2n. \u0110\u01a1n v\u1ecb: NM<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0394L l\u00e0 bi\u1ebfn d\u1ea1ng c\u1ee7a l\u00f2 xo. \u0110\u01a1n v\u1ecb: m<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Nang_luong_tinh_dien_la_gi\"><\/span>N\u0103ng l\u01b0\u1ee3ng t\u0129nh \u0111i\u1ec7n l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Ti\u1ec1m n\u0103ng t\u0129nh \u0111i\u1ec7n l\u00e0 m\u1ed9t trong nh\u1eefng n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c b\u1ea3o t\u1ed3n d\u01b0\u1edbi d\u1ea1ng t\u0129nh. <\/p>\n<p dir=\"ltr\">Ti\u1ec1m n\u0103ng t\u0129nh \u0111i\u1ec7n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh d\u1ef1a tr\u00ean c\u00f4ng th\u1ee9c sau:<\/p>\n<table style=\"border-collapse: collapse;width: 100%\" border=\"1\">\n<tr>\n<td style=\"width: 99.0477%;border: 0.5px solid #4e4c50\">\n<p style=\"text-align: center\">= qv<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Q l\u00e0 m\u1ed9t \u0111i\u1ec7n \u00e1p. \u0110\u01a1n v\u1ecb: c<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">V l\u00e0 \u0111i\u1ec7n t\u00edch c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c xem x\u00e9t. \u0110\u01a1n v\u1ecb: v<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">L\u01b0u \u00fd: \u0110\u1ec3 c\u00f3 th\u1ec3 t\u00ednh to\u00e1n gi\u00e1 tr\u1ecb c\u1ee7a Q v\u00e0 V, h\u1ecd c\u1ea7n \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c sau:<\/p>\n<table style=\"border-collapse: collapse;width: 100%\" border=\"1\">\n<tr>\n<td style=\"width: 99.0477%;border: 0.5px solid #4e4c50\">\n<p style=\"text-align: center\">F = QE<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">F l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a l\u1ef1c \u0111i\u1ec7n. \u0110\u01a1n v\u1ecb: n<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">E l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 \u0111i\u1ec7n tr\u01b0\u1eddng. \u0110\u01a1n v\u1ecb: V\/m, n\/c<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Q l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n t\u00edch th\u1eed nghi\u1ec7m. \u0110\u01a1n v\u1ecb: c<\/p>\n<\/li>\n<\/ul>\n<p>Xem th\u00eam: Kh\u00f4ng th\u1ec3 b\u1ecf qua ki\u1ebfn \u200b\u200bth\u1ee9c t\u1eeb AZ v\u1ec1 m\u1eb9 m\u1eb9<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_bai_tap_chuc_nang_vat_ly_10_voi_cau_tra_loi\"><\/span>M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp ch\u1ee9c n\u0103ng v\u1eadt l\u00fd 10 (v\u1edbi c\u00e2u tr\u1ea3 l\u1eddi) <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 ti\u1ec1m n\u0103ng (V\u1eadt l\u00fd 10) \u0111\u1ec3 gi\u00fap h\u1ecd c\u1ee7ng c\u1ed1 l\u00fd thuy\u1ebft \u0111\u00e3 h\u1ecdc \u1edf tr\u00ean.<\/p>\n<p dir=\"ltr\">B\u00e0i 1: M\u1ed9t v\u1eadt th\u1ec3 kh\u1ed1i l\u01b0\u1ee3ng 1,0 kg v\u1edbi ti\u1ec1m n\u0103ng 1,0 J cho m\u1eb7t \u0111\u1ea5t. L\u1ea5y g = 9,8 m\/s^2. V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, \u0111\u1ed9 cao l\u00e0 bao nhi\u00eau?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c cho tr\u1ecdng l\u1ef1c, ch\u00fang t\u00f4i nh\u1eadn \u0111\u01b0\u1ee3c: WT = MGZ<\/p>\n<p dir=\"ltr\">-&gt; z = wt\/mg = 1\/1.9.8 = 0.102 (m)<\/p>\n<p dir=\"ltr\">B\u00e0i 2: Trong h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y, hai \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 c\u00f9ng kh\u1ed1i l\u01b0\u1ee3ng \u1edf hai v\u1ecb tr\u00ed m v\u00e0 n \u0111\u1ec3 Mn n\u1eb1m ngang. So s\u00e1nh ti\u1ec1m n\u0103ng t\u1ea1i M v\u00e0 t\u1ea1i N.<\/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\/the-nang-5.jpg\" alt=\"\" width=\"394\" height=\"196\"><\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">B\u1edfi v\u00ec MN n\u1eb1m ngang, n\u1ebfu b\u1ea1n ch\u1ecdn c\u00f9ng m\u1ed9t c\u1ed9t m\u1ed1c (v\u00ed d\u1ee5 t\u1ea1i O), ti\u1ec1m n\u0103ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng t\u1ea1i M v\u00e0 t\u1ea1i N l\u00e0 nh\u01b0 nhau.<\/p>\n<p dir=\"ltr\">B\u00e0i 3: L\u00f2 xo c\u00f3 \u0111\u1ed9 c\u1ee9ng k = 200 N\/m, m\u1ed9t \u0111\u1ea7u c\u1ed1 \u0111\u1ecbnh, \u0111\u1ea7u kia \u0111\u01b0\u1ee3c g\u1eafn v\u00e0o c\u00e1c v\u1eadt th\u1ec3 nh\u1ecf. Khi l\u00f2 xo \u0111\u01b0\u1ee3c n\u00e9n 2 cm, \u0111\u1ed9 co gi\u00e3n c\u1ee7a h\u1ec7 th\u1ed1ng l\u00e0 g\u00ec? Li\u1ec7u s\u1ee9c m\u1ea1nh n\u00e0y c\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00f4ng?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">\u0110\u1ed9 co gi\u00e3n c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng 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-the-nang.JPG\" alt=\"\" width=\"355\" height=\"64\"><\/p>\n<p dir=\"ltr\">N\u0103ng l\u01b0\u1ee3ng n\u00e0y kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt th\u1ec3.<\/p>\n<p dir=\"ltr\">B\u00e0i 4: Hai \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng M v\u00e0 2M \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf hai \u0111\u1ed9 cao l\u00e0 2 gi\u1edd v\u00e0 h. T\u1ef7 l\u1ec7 gi\u1eefa tr\u1ecdng l\u1ef1c c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng th\u1ee9 nh\u1ea5t v\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng th\u1ee9 hai?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">H\u00e0m c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng 1 c\u00f3 gi\u00e1 tr\u1ecb: wt1 = mg2.h = 2mgh<\/p>\n<p dir=\"ltr\">Ch\u1ee9c n\u0103ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng 2 l\u00e0 h\u1ee3p l\u1ec7: wt2 = mg2.h = 2mgh<\/p>\n<p dir=\"ltr\">T\u1ef7 l\u1ec7 gi\u1eefa tr\u1ecdng l\u1ef1c c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng th\u1ee9 nh\u1ea5t v\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng th\u1ee9 hai l\u00e0:<\/p>\n<p dir=\"ltr\">WT1\/WT2 = 2MGH\/2MGH = 1<\/p>\n<p dir=\"ltr\">B\u00e0i 5: M\u1ed9t l\u00f2 xo ngang c\u00f3 \u0111\u1ed9 c\u1ee9ng K = 250 N\/m. K\u00e9o m\u00f9a xu\u00e2n kho\u1ea3ng 2cm. T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, \u0111\u1ed9 co gi\u00e3n s\u1ebd l\u00e0 bao nhi\u00eau? L\u1ef1c \u0111\u00e0n h\u1ed3i s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n cho vi\u1ec7c n\u00e0y s\u1ebd l\u00e0 g\u00ec?<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn gi\u1ea3i ph\u00e1p:<\/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-the-nang-1.JPG\" alt=\"\" width=\"483\" height=\"172\"><\/p>\n<p dir=\"ltr\">B\u00e0i 6: M\u1ed9t v\u1eadt th\u1ec3 c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 3 kg \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf v\u1ecb tr\u00ed tr\u1ecdng l\u1ef1c v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng \u1edf v\u1ecb tr\u00ed \u0111\u00f3 l\u00e0 WT1 = 600 J. gi\u1ea3i ph\u00f3ng v\u1eadt th\u1ec3 r\u01a1i t\u1ef1 do xu\u1ed1ng \u0111\u1ea5t v\u1edbi WT2 = -900 J. ti\u1ec1m n\u0103ng J.<\/p>\n<p dir=\"ltr\">M\u1ed9t. H\u1ecfi chi\u1ec1u cao \u0111\u00e3 r\u01a1i xu\u1ed1ng t\u1eeb m\u1eb7t \u0111\u1ea5t.<\/p>\n<p dir=\"ltr\">b. X\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ee9c c\u1ee7a ti\u1ec1m n\u0103ng \u0111\u01b0\u1ee3c ch\u1ecdn.<\/p>\n<p dir=\"ltr\">c. T\u00ecm v\u1eadn t\u1ed1c c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng khi \u0111\u1ed1i t\u01b0\u1ee3ng \u0111i qua v\u1ecb tr\u00ed n\u00e0y.<\/p>\n<p dir=\"ltr\">H\u01b0\u1edbng d\u1eabn gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">M\u1ed9t. Chi\u1ec1u cao so v\u1edbi v\u1ecb tr\u00ed l\u1ef1a ch\u1ecdn c\u1ed9t m\u1ed1c ti\u1ec1m n\u0103ng l\u00e0:<\/p>\n<p dir=\"ltr\">Z1 = WT1\/mg = 20 (m)<\/p>\n<p dir=\"ltr\">V\u1ecb tr\u00ed c\u1ee7a m\u1eb7t \u0111\u1ea5t so v\u1edbi v\u1ecb tr\u00ed c\u1ee7a \u0111\u1ecba danh ti\u1ec1m n\u0103ng:<\/p>\n<p dir=\"ltr\">Z2 = WT2\/mg = -30 (m)<\/p>\n<p dir=\"ltr\">Chi\u1ec1u cao c\u1ee7a v\u1eadt r\u01a1i so v\u1edbi m\u1eb7t \u0111\u1ea5t l\u00e0:<\/p>\n<p dir=\"ltr\">Z = Z1+LZ2L = 50 (m)<\/p>\n<p dir=\"ltr\">b. V\u1ecb tr\u00ed t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ee9c 0 c\u1ee7a ti\u1ec1m n\u0103ng \u0111\u01b0\u1ee3c ch\u1ecdn t\u1eeb v\u1ecb tr\u00ed c\u1ee7a b\u1ea3n ph\u00e1t h\u00e0nh (\u1edf d\u01b0\u1edbi c\u00f9ng c\u1ee7a v\u1ecb tr\u00ed ph\u00e1t h\u00e0nh) 20m v\u00e0 m\u1eb7t \u0111\u1ea5t (tr\u00ean m\u1eb7t \u0111\u1ea5t) 30m<\/p>\n<p dir=\"ltr\">c. V\u1eadn t\u1ed1c c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng khi \u0111i qua v\u1ecb tr\u00ed \u0111\u00e3 ch\u1ecdn l\u00e0m g\u1ed1c ti\u1ec1m n\u0103ng 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-the-nang-2.JPG\" alt=\"\" width=\"321\" height=\"53\"><\/p>\n<p dir=\"ltr\">Ph\u1ea7n k\u1ebft lu\u1eadn:<\/p>\n<\/p>\n<p dir=\"ltr\">Tr\u00ean \u0111\u00e2y l\u00e0 t\u1ea5t c\u1ea3 c\u00e1c ki\u1ebfn \u200b\u200bth\u1ee9c li\u00ean quan \u0111\u1ebfn b\u00e0i h\u1ecdc thi\u1ebft y\u1ebfu (v\u1eadt l\u00fd 10). Hy v\u1ecdng, v\u1edbi ki\u1ebfn \u200b\u200bth\u1ee9c m\u00e0 Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef \u0111\u00e3 cung c\u1ea5p, h\u1ecd c\u00f3 th\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 \u0111\u1ecbnh ngh\u0129a v\u00e0 c\u00f4ng th\u1ee9c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ti\u1ec1m n\u0103ng \u00e1p d\u1ee5ng t\u1ed1t trong c\u00f4ng vi\u1ec7c c\u0169ng nh\u01b0 \u1ee9ng d\u1ee5ng trong cu\u1ed9c s\u1ed1ng th\u1ef1c.<\/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>Trong c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd, n\u0103ng l\u01b0\u1ee3ng l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong cu\u1ed9c s\u1ed1ng v\u00e0 lu\u00f4n t\u1ed3n t\u1ea1i xung quanh ch\u00fang ta. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng c\u00f3 th\u1ec3 hi\u1ec3u kh\u00e1i ni\u1ec7m v\u00e0 c\u00f4ng th\u1ee9c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ti\u1ec1m n\u0103ng. B\u00e0i vi\u1ebft sau \u0111\u00e2y&#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-18839","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/18839","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=18839"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/18839\/revisions"}],"predecessor-version":[{"id":24179,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/18839\/revisions\/24179"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=18839"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=18839"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=18839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}