{"id":21172,"date":"2025-07-08T04:00:52","date_gmt":"2025-07-07T21:00:52","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=21172"},"modified":"2025-07-09T13:35:15","modified_gmt":"2025-07-09T06:35:15","slug":"luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/","title":{"rendered":"L\u1ef1c k\u1ebf, ph\u00e9p \u0111o l\u1ef1c, tr\u1ecdng l\u01b0\u1ee3ng, kh\u1ed1i l\u01b0\u1ee3ng &#8211; Ki\u1ebfn th\u1ee9c v\u1eadt l\u00fd 6"},"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-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Trong_luc_trong_luong_la_bao_nhieu\" >Tr\u1ecdng l\u1ef1c, tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 bao nhi\u00eau?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Trong_luc_la_gi\" >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-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Trong_luong_la_bao_nhieu\" >Tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 bao nhi\u00eau?<\/a><\/li><\/ul><\/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-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Don_vi_do_luong_luc_luong\" >\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u1ef1c l\u01b0\u1ee3ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Luc_luong_la_gi_Luc_duoc_su_dung_de_lam_gi\" >L\u1ef1c l\u01b0\u1ee3ng l\u00e0 g\u00ec? L\u1ef1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m 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-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Luc_luong_la_gi\" >L\u1ef1c l\u01b0\u1ee3ng 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-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Luc_nao_co_the_duoc_su_dung_de_do_cac_luc\" >L\u1ef1c n\u00e0o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o c\u00e1c l\u1ef1c?<\/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\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Loai_luc_nao\" >Lo\u1ea1i l\u1ef1c n\u00e0o?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Tim_hieu_cau_truc_cua_mot_the_luc_mua_xuan\" >T\u00ecm hi\u1ec3u c\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t th\u1ebf l\u1ef1c m\u00f9a xu\u00e2n<\/a><\/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-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Cach_do_luc_bang_mot_met\" >C\u00e1ch \u0111o l\u1ef1c b\u1eb1ng m\u1ed9t m\u00e9t<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Chuan_bi\" >Chu\u1ea9n b\u1ecb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Cac_buoc_de_do_luc_bang_mot_met\" >C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 \u0111o l\u1ef1c b\u1eb1ng m\u1ed9t m\u00e9t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Chu_y_khi_do\" >Ch\u00fa \u00fd khi \u0111o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Thuc_hanh_do_trong_luc_cua_vat_the_voi_luc_lo_xo\" >Th\u1ef1c h\u00e0nh \u0111o tr\u1ecdng l\u1ef1c c\u1ee7a v\u1eadt th\u1ec3 v\u1edbi l\u1ef1c l\u00f2 xo<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Cong_thuc_tiep_xuc_giua_trong_luong_va_khoi_luong\" >C\u00f4ng th\u1ee9c ti\u1ebfp x\u00fac gi\u1eefa tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.ckconitsha.com\/vn\/luc-ke-phep-do-luc-trong-luong-khoi-luong-kien-thuc-vat-ly-6\/#Cac_cau_hoi_va_bai_tap_lien_quan\" >C\u00e1c c\u00e2u h\u1ecfi v\u00e0 b\u00e0i t\u1eadp li\u00ean quan<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111o \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c? \u0110\u1ec3 \u0111o \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c, ch\u00fang ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ef1c. V\u1eady h\u00e0nh tinh l\u00e0 g\u00ec? L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 s\u1eed d\u1ee5ng l\u1ef1c \u0111\u1ec3 \u0111o l\u1ef1c? B\u00e0i vi\u1ebft sau \u0111\u00e2y s\u1ebd cung c\u1ea5p \u0111\u1ee7 ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 l\u1ef1c l\u01b0\u1ee3ng &amp; h\u01b0\u1edbng d\u1eabn v\u1ec1 c\u00e1ch \u0111o l\u01b0\u1eddng l\u1ef1c chi ti\u1ebft.<\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/image\/600x480.png\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Trong_luc_trong_luong_la_bao_nhieu\"><\/span>Tr\u1ecdng l\u1ef1c, tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 bao nhi\u00eau? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/Untitled_design_(2).jpg\" alt=\"Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? (\u1ea2nh: Shutterstock.com)\" width=\"100%\"><\/p>\n<h3 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><\/h3>\n<p dir=\"ltr\">Tr\u1ecdng l\u1ef1c ch\u00ednh l\u00e0 s\u1ef1 h\u1ea5p d\u1eabn ho\u1eb7c tr\u1ecdng l\u1ef1c c\u1ee7a tr\u00e1i \u0111\u1ea5t tr\u00ean m\u1ed9t v\u1eadt th\u1ec3. Tr\u1ecdng l\u1ef1c c\u00f3 m\u1ed9t chi\u1ec1u d\u1ecdc v\u00e0 c\u00f3 xu h\u01b0\u1edbng h\u01b0\u1edbng v\u1ec1 tr\u00e1i \u0111\u1ea5t. Nh\u1edd tr\u1ecdng l\u1ef1c, t\u1ea5t c\u1ea3 m\u1ecdi th\u1ee9 c\u00f3 th\u1ec3 \u0111\u1ee9ng y\u00ean tr\u00ean m\u1eb7t \u0111\u1ea5t. <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Trong_luong_la_bao_nhieu\"><\/span>Tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 bao nhi\u00eau? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">M\u1ecdi ng\u01b0\u1eddi g\u1ecdi c\u01b0\u1eddng \u0111\u1ed9 (ho\u1eb7c c\u01b0\u1eddng \u0111\u1ed9) c\u1ee7a tr\u1ecdng l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean m\u1ed9t v\u1eadt th\u1ec3 l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00f3. L\u1ef1c \u0111o tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0111o kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c chung. <\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Don_vi_do_luong_luc_luong\"><\/span>\u0110\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng l\u1ef1c l\u01b0\u1ee3ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a l\u1ef1c, h\u1ec7 th\u1ed1ng c\u00e1c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng ph\u00e1p l\u00fd c\u1ee7a Vi\u1ec7t Nam s\u1eed d\u1ee5ng \u0111\u01a1n v\u1ecb Niuton (k\u00fd hi\u1ec7u l\u00e0 N). Niuton \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb t\u00ean c\u1ee7a nh\u00e0 khoa h\u1ecdc ng\u01b0\u1eddi Anh Isaac Newton. Anh ta l\u00e0 ng\u01b0\u1eddi t\u00ecm th\u1ea5y tr\u1ecdng l\u1ef1c. <\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Luc_luong_la_gi_Luc_duoc_su_dung_de_lam_gi\"><\/span>L\u1ef1c l\u01b0\u1ee3ng l\u00e0 g\u00ec? L\u1ef1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m g\u00ec<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-ke-3.jpg\" alt=\"Lo\u1ea1i m\u00e1y \u0111o l\u1ef1c n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng? (\u1ea2nh: Shutterstock.com)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Luc_luong_la_gi\"><\/span>L\u1ef1c l\u01b0\u1ee3ng l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ed3ng h\u1ed3 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Luc_nao_co_the_duoc_su_dung_de_do_cac_luc\"><\/span>L\u1ef1c n\u00e0o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o c\u00e1c l\u1ef1c? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">V\u1edbi m\u00e9t, ch\u00fang ta c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng l\u1ef1c k\u00e9o<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00f3 m\u1ed9t m\u00e1y \u0111o l\u1ef1c cho l\u1ef1c \u0111\u1ea9y <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00f3 m\u1ed9t h\u00e0nh tinh \u0111o c\u1ea3 l\u1ef1c k\u00e9o v\u00e0 l\u1ef1c \u0111\u1ea9y <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Tuy nhi\u00ean, l\u1ef1c c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0111o kh\u1ed1i l\u01b0\u1ee3ng v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t.<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Loai_luc_nao\"><\/span>Lo\u1ea1i l\u1ef1c n\u00e0o? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-ke-2.jpg\" alt=\"C\u00e1c lo\u1ea1i l\u1ef1c l\u01b0\u1ee3ng ph\u1ed5 bi\u1ebfn. (\u1ea2nh: Shutterstock.com) \" width=\"100%\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u1ed3ng h\u1ed3 \u0111i\u1ec7n t\u1eed: C\u00f3 m\u1ed9t m\u00f3c \u00e1o, khi l\u1ef1c \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o, m\u00e0n h\u00ecnh \u0111i\u1ec7n t\u1eed xu\u1ea5t hi\u1ec7n \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">L\u1ef1c l\u01b0\u1ee3ng m\u00f9a xu\u00e2n (\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t): Hang m\u00f3c. B\u00ean ngo\u00e0i v\u1ecf l\u1ef1c c\u00f3 c\u00e1c \u0111\u01b0\u1eddng ph\u00e2n chia \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c. Ch\u00fang t\u00f4i s\u1ebd d\u1ef1a v\u00e0o \u0111i\u1ec1u \u0111\u00f3 \u0111\u1ec3 xem k\u1ebft qu\u1ea3 c\u1ee7a l\u1ef1c l\u01b0\u1ee3ng. <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">L\u1ef1c l\u01b0\u1ee3ng xem: C\u00f3 m\u1ed9t m\u00f3c \u00e1o, m\u1eb7t \u0111\u1ed3ng h\u1ed3 tr\u00f2n. <\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tim_hieu_cau_truc_cua_mot_the_luc_mua_xuan\"><\/span>T\u00ecm hi\u1ec3u c\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t th\u1ebf l\u1ef1c m\u00f9a xu\u00e2n <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-ke-4.jpg\" alt=\"C\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t l\u1ef1c l\u00f2 xo. (\u1ea2nh: Shutterstock.com)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">L\u1ef1c l\u01b0\u1ee3ng bao g\u1ed3m m\u1ed9t m\u00f9a xu\u00e2n. M\u1ed9t \u0111\u1ea7u g\u1eafn v\u00e0o v\u1ecf c\u1ee7a l\u1ef1c, \u0111\u1ea7u kia c\u00f3 m\u1ed9t c\u00e1i m\u00f3c v\u00e0 m\u1ed9t ch\u1ec9 b\u00e1o. C\u00e1c ch\u1ec9 b\u00e1o ch\u1ea1y tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a b\u1ea3ng \u0111\u1ec3 ph\u00e2n chia \u0111\u1ed9. <\/p>\n<p dir=\"ltr\">T\u00f3m l\u1ea1i, l\u1ef1c l\u00f2 xo bao g\u1ed3m 5 ph\u1ea7n c\u01a1 b\u1ea3n: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Thi\u1ebft k\u1ebf v\u1ecf: Tr\u00ean v\u1ecf, c\u00f3 nh\u1eefng \u0111\u01b0\u1eddng ph\u00e2n chia \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c. <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M\u00f9a xu\u00e2n: N\u1eb1m b\u00ean trong v\u1ecf l\u1ef1c <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Kim ch\u1ec9 th\u1ecb: Cho bi\u1ebft \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c, ch\u1ec9 b\u00e1o di chuy\u1ec3n \u0111\u1ebfn m\u1ed9t s\u1ed1 nh\u1ea5t \u0111\u1ecbnh khi ch\u00fang ta treo v\u1eadt th\u1ec3 v\u00e0o l\u00f2 xo. <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hai \u0111\u1ea7u m\u00f3c: M\u1ed9t \u0111\u1ea7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1ed1 \u0111\u1ecbnh l\u1ef1c thi\u1ebft k\u1ebf tr\u00ean gi\u00e1 treo th\u1eed nghi\u1ec7m. \u0110\u1ea7u c\u00f3 m\u1ed9t m\u00f3c \u00e1o b\u00ean d\u01b0\u1edbi \u0111\u1ec3 treo v\u1eadt th\u1ec3 v\u00e0o l\u1ef1c. <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Ph\u00e2n chia \u0111o (chia cho \u0111\u01a1n v\u1ecb NIUton) (v\u1edbi gi\u1edbi h\u1ea1n \u0111o v\u00e0 ph\u00e2n chia nh\u1ecf nh\u1ea5t) <\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_do_luc_bang_mot_met\"><\/span>C\u00e1ch \u0111o l\u1ef1c b\u1eb1ng m\u1ed9t m\u00e9t <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Chuan_bi\"><\/span>Chu\u1ea9n b\u1ecb <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">M\u1ed9t l\u1ef1c l\u01b0\u1ee3ng m\u00f9a xu\u00e2n <\/p>\n<p dir=\"ltr\">\u0110\u1ed1i t\u01b0\u1ee3ng \u0111\u1ec3 \u0111o tr\u1ecdng l\u01b0\u1ee3ng <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_buoc_de_do_luc_bang_mot_met\"><\/span>C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 \u0111o l\u1ef1c b\u1eb1ng m\u1ed9t m\u00e9t <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 \u0111o \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c, ch\u00fang t\u00f4i tu\u00e2n theo c\u00e1c b\u01b0\u1edbc sau: <\/p>\n<p dir=\"ltr\">B\u01b0\u1edbc 1: \u0110\u1ea7u ti\u00ean ch\u00fang t\u00f4i \u0111i\u1ec1u ch\u1ec9nh ch\u1ec9 b\u00e1o theo d\u00f2ng ch\u00ednh x\u00e1c 0 <\/p>\n<p dir=\"ltr\">B\u01b0\u1edbc 2: H\u00e3y \u0111\u1ec3 l\u1ef1c c\u1ea7n \u0111o l\u00f2 xo c\u1ee7a m\u00e1y \u0111o l\u1ef1c <\/p>\n<p dir=\"ltr\">B\u01b0\u1edbc 3: Gi\u1eef v\u1ecf c\u1ee7a l\u1ef1c \u0111\u1ec3 l\u00f2 xo c\u1ee7a l\u00f2 xo n\u1eb1m d\u1ecdc theo h\u01b0\u1edbng c\u1ee7a l\u1ef1c \u0111\u01b0\u1ee3c \u0111o <\/p>\n<p dir=\"ltr\">B\u01b0\u1edbc 4: \u0110\u1ecdc v\u00e0 vi\u1ebft k\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c \u0111o l\u01b0\u1eddng <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Chu_y_khi_do\"><\/span>Ch\u00fa \u00fd khi \u0111o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Khi \u0111o l\u01b0\u1eddng c\u1ea7n ch\u00fa \u00fd: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u01af\u1edbc t\u00ednh gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c \u0111o \u0111\u1ec3 ch\u1ecdn GHD th\u00edch h\u1ee3p v\u00e0 unn <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S\u1eeda s\u1ed1 s\u1ed1 ch\u1ec9 s\u1ed1 ban \u0111\u1ea7u l\u00e0 0 <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Khi th\u1ef1c hi\u1ec7n c\u00e1c th\u00ed nghi\u1ec7m v\u1edbi l\u00f2 xo, ch\u00fang ta kh\u00f4ng n\u00ean k\u00e9o l\u00f2 xo b\u1eb1ng m\u1ed9t l\u1ef1c qu\u00e1 l\u1edbn ho\u1eb7c treo v\u00e0o l\u00f2 xo m\u1ed9t v\u1eadt c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng qu\u00e1 l\u1edbn. N\u1ebfu m\u00f9a xu\u00e2n tr\u1ea3i d\u00e0i v\u1edbi m\u1ed9t l\u1ef1c qu\u00e1 l\u1edbn, m\u00f9a xu\u00e2n s\u1ebd m\u1ea5t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i v\u00e0 c\u00f3 th\u1ec3 b\u1ecb ph\u00e1 v\u1ee1. V\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, n\u1ebfu ch\u00fang ta ng\u1eebng k\u00e9o l\u00f2 xo, n\u00f3 kh\u00f4ng th\u1ec3 tr\u1edf l\u1ea1i chi\u1ec1u d\u00e0i t\u1ef1 nhi\u00ean ban \u0111\u1ea7u. <\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Thuc_hanh_do_trong_luc_cua_vat_the_voi_luc_lo_xo\"><\/span>Th\u1ef1c h\u00e0nh \u0111o tr\u1ecdng l\u1ef1c c\u1ee7a v\u1eadt th\u1ec3 v\u1edbi l\u1ef1c l\u00f2 xo <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/luc-ke-6.jpg\" alt=\"T\u00e1c ph\u1ea9m ngh\u1ec7 thu\u1eadt khi s\u1eed d\u1ee5ng l\u00f2 xo tr\u1ecdng l\u1ef1c c\u1ee7a kh\u1ed1i g\u1ed7. (\u1ea2nh: Shutterstock.com) \" width=\"100%\"><\/p>\n<p dir=\"ltr\">\u00c1p d\u1ee5ng c\u00e1c b\u01b0\u1edbc tr\u00ean \u0111\u1ec3 \u0111o l\u1ef1c k\u00e9o c\u1ee7a kh\u1ed1i g\u1ed7 (c\u00f3 m\u00f3c treo) <\/p>\n<p dir=\"ltr\">Ch\u00fang t\u00f4i l\u00e0m nh\u01b0 sau: <\/p>\n<p dir=\"ltr\">V\u1ecb tr\u00ed \u0111\u1ea7u ti\u00ean kh\u1ed1i g\u1ed7 tr\u00ean b\u00e0n <\/p>\n<p dir=\"ltr\">\u0110\u1eb7t l\u1ef1c ngang l\u00ean b\u00e0n, ch\u00fang t\u00f4i m\u00f3c m\u1ed9t \u0111\u1ea7u c\u1ee7a l\u1ef1c v\u00e0o \u0111\u1ea7u c\u1ee7a kh\u1ed1i g\u1ed7 <\/p>\n<p dir=\"ltr\">Ti\u1ebfp theo, s\u1eed d\u1ee5ng tay c\u1ee7a b\u1ea1n \u0111\u1ec3 k\u00e9o l\u1ef1c cho kh\u1ed1i g\u1ed7 di chuy\u1ec3n <\/p>\n<p dir=\"ltr\">Cu\u1ed1i c\u00f9ng \u0111\u1ecdc ch\u1ec9 s\u1ed1 l\u1ef1c, ch\u00fang t\u00f4i c\u00f3 k\u1ebft qu\u1ea3 c\u1ea7n \u0111o l\u01b0\u1eddng <\/p>\n<p dir=\"ltr\">Th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc \u00edt nh\u1ea5t 3 l\u1ea7n v\u00e0 sau \u0111\u00f3 ghi l\u1ea1i k\u1ebft qu\u1ea3 m\u1ed7i ph\u00e9p \u0111o. <\/p>\n<p dir=\"ltr\">Xem th\u00eam: C\u00f4ng th\u1ee9c ti\u1ebfp x\u00fac v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng (Gi\u1ea3i th\u00edch &amp; B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh)<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tiep_xuc_giua_trong_luong_va_khoi_luong\"><\/span>C\u00f4ng th\u1ee9c ti\u1ebfp x\u00fac gi\u1eefa tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00f3. Tr\u1ecdng l\u01b0\u1ee3ng c\u00e0ng cao, tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng c\u00e0ng l\u1edbn. Gi\u1eefa tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a c\u00f9ng m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng v\u1edbi c\u00f4ng th\u1ee9c sau <\/p>\n<table style=\"border-collapse: collapse;width: 100%\" border=\"1\">\n<tr>\n<td style=\"width: 99.0477%;text-align: center;border: 0.5px solid #4e4c50\">P = 10.M<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">P: Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng (\u0111\u01a1n v\u1ecb n)<\/p>\n<p dir=\"ltr\">M: Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng (kg) <\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5, \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c: m\u1ed9t chi\u1ebfc xe t\u1ea3i c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 3,2 t\u1ea5n s\u1ebd n\u1eb7ng bao nhi\u00eau? <\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: Ch\u00fang t\u00f4i trao \u0111\u1ed5i 3,2 t\u1ea5n = 3200 kg <\/p>\n<p dir=\"ltr\">Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a xe t\u1ea3i l\u00e0: P = 10.M = 10.3200 = 32000 (n) <\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_cau_hoi_va_bai_tap_lien_quan\"><\/span>C\u00e1c c\u00e2u h\u1ecfi v\u00e0 b\u00e0i t\u1eadp li\u00ean quan<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">B\u00e0i 1: T\u1ea1i sao ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t l\u1ef1c l\u01b0\u1ee3ng khi mua v\u00e0 b\u00e1n \u0111\u1ec3 ki\u1ebfm \u0111\u01b0\u1ee3c tr\u1ecdng l\u01b0\u1ee3ng? <\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: B\u1edfi v\u00ec khi s\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3, ch\u00fang t\u00f4i s\u1ebd \u0111o tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng. Sau \u0111\u00f3, kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c mua v\u00e0 b\u00e1n s\u1ebd l\u00e0: m = p\/10 (kg) <\/p>\n<p dir=\"ltr\">B\u00e0i 2: Trong c\u00e1c c\u00e2u sau, c\u00e2u n\u00e0o \u0111\u00fang? <\/p>\n<p dir=\"ltr\">A. M\u00e1y \u0111o l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111\u1ec3 \u0111o kh\u1ed1i l\u01b0\u1ee3ng <\/p>\n<p dir=\"ltr\">B. Rotbest-van l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o tr\u1ecdng l\u01b0\u1ee3ng <\/p>\n<p dir=\"ltr\">C. M\u00e1y \u0111o l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o c\u1ea3 tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng <\/p>\n<p dir=\"ltr\">D. M\u00e1y \u0111o l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111\u1ec3 \u0111o l\u1ef1c, v\u00e0 \u00e1o cho\u00e0ng c\u00e2n l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o tr\u1ecdng l\u01b0\u1ee3ng <\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: d <\/p>\n<p dir=\"ltr\">B\u00e0i 3: \u0110i\u1ec1n v\u00e0o s\u1ed1 th\u00edch h\u1ee3p trong h\u1ed9p<\/p>\n<p dir=\"ltr\">A, m\u1ed9t chi\u1ebfc xe t\u1ea3i c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 28 t\u1ea5n s\u1ebd n\u1eb7ng \u2026\u2026 .niuton<\/p>\n<p dir=\"ltr\">B, 20 gi\u1ea5y n\u1eb7ng 18,4 n. M\u1ed7i v\u1ecb tr\u00ed s\u1ebd c\u00f3 m\u1ed9t kh\u1ed1i &#8230; (g) <\/p>\n<p dir=\"ltr\">C, m\u1ed9t vi\u00ean g\u1ea1ch l\u00e0 1600 g. M\u1ed9t \u0111\u1ed1ng g\u1ea1ch v\u1edbi 10 000 vi\u00ean s\u1ebd n\u1eb7ng \u2026\u2026 niuton<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: <\/p>\n<p dir=\"ltr\">A, m = 2800 kg. P = 2800.10 = 28000 (n). V\u00ec v\u1eady, ch\u00fang t\u00f4i nh\u1eadp 28000<\/p>\n<p dir=\"ltr\">B, tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a 1 v\u1ecb tr\u00ed gi\u1ea5y = 18,4\/20 = 0,92 N. SO m = p\/10 = 0,92\/10 = 0,092 kg = 92 g. V\u00ec v\u1eady, s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ec3 \u0111i\u1ec1n l\u00e0 92 <\/p>\n<p dir=\"ltr\">C, thay \u0111\u1ed5i 1600 g = 1,6 kg. Tr\u1ecdng l\u01b0\u1ee3ng 10000 g\u1ea1ch = 1,6 x 10000 = 160000 kg <\/p>\n<p dir=\"ltr\">Tr\u1ecdng l\u01b0\u1ee3ng 10000 g\u1ea1ch = m.10 = 16000.10 = 160000 (n) <\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ec3 \u0111i\u1ec1n l\u00e0 160000 <\/p>\n<p dir=\"ltr\">B\u00e0i h\u1ecdc 4: Ch\u1ecdn \u0111\u00fang c\u00e2u <\/p>\n<p dir=\"ltr\">A. Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a t\u00fai \u0111\u01b0\u1eddng l\u00e0 l\u01b0\u1ee3ng \u0111\u01b0\u1eddng c\u00f3 trong t\u00fai.<\/p>\n<p dir=\"ltr\">B. Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t ng\u01b0\u1eddi l\u00e0 m\u1ee9c \u0111\u1ed9 thu h\u00fat c\u1ee7a Tr\u00e1i \u0111\u1ea5t t\u00e1c \u0111\u1ed9ng l\u00ean ng\u01b0\u1eddi \u0111\u00f3.<\/p>\n<p dir=\"ltr\">C. Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00f3.<\/p>\n<p dir=\"ltr\">D. Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt ph\u1ee5 thu\u1ed9c v\u00e0o tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a n\u00f3.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: d<\/p>\n<p dir=\"ltr\">B\u00e0i 5: Khi k\u00e9o \u0111\u1ed1i t\u01b0\u1ee3ng 1kg theo h\u01b0\u1edbng th\u1eb3ng \u0111\u1ee9ng, l\u1ef1c l\u00e0 g\u00ec?<\/p>\n<p dir=\"ltr\">A. L\u1ef1c l\u01b0\u1ee3ng \u00edt nh\u1ea5t l\u00e0 1000N<\/p>\n<p dir=\"ltr\">B. L\u1ef1c l\u01b0\u1ee3ng \u00edt nh\u1ea5t 100N<\/p>\n<p dir=\"ltr\">C. L\u1ef1c l\u01b0\u1ee3ng \u00edt nh\u1ea5t 10n<\/p>\n<p dir=\"ltr\">D. L\u1ef1c l\u01b0\u1ee3ng \u00edt nh\u1ea5t 1n<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: C (Gi\u1ea3i th\u00edch: Tr\u1ecdng l\u1ef1c ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng: P = 10.M = 10.1 = 10n =&gt; \u0110\u1ec3 k\u00e9o c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ea7n l\u1ef1c t\u1ed1i thi\u1ec3u l\u00e0 10n) <\/p>\n<p dir=\"ltr\">B\u00e0i 6: \u0110i\u1ec1u n\u00e0o sau \u0111\u00e2y l\u00e0 \u0111\u00fang?<\/p>\n<p dir=\"ltr\">A. M\u00e1y \u0111o l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 \u0111\u1ec3 \u0111o c\u1ea3 tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng.<\/p>\n<p dir=\"ltr\">B. Khi c\u00e2n h\u00e0ng h\u00f3a, \u0111\u01b0a m\u1ecdi ng\u01b0\u1eddi l\u00ean m\u00e1y bay, ch\u00fang t\u00f4i quan t\u00e2m \u0111\u1ebfn tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a h\u00e0ng h\u00f3a.<\/p>\n<p dir=\"ltr\">C. Khi ch\u00fang t\u00f4i c\u00e2n m\u1ed9t t\u00fai k\u1eb9o, ch\u00fang t\u00f4i quan t\u00e2m \u0111\u1ebfn tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a t\u00fai k\u1eb9o.<\/p>\n<p dir=\"ltr\">D. Khi m\u1ed9t chi\u1ebfc xe t\u1ea3i ch\u1ea1y qua m\u1ed9t c\u00e2y c\u1ea7u y\u1ebfu, n\u1ebfu kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a chi\u1ebfc xe qu\u00e1 l\u1edbn, n\u00f3 c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 c\u00e2y c\u1ea7u.<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: b<\/p>\n<p dir=\"ltr\">B\u00e0i 7: \u0110\u1ec3 \u0111o th\u1ec3 t\u00edch v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a s\u1ecfi, ng\u01b0\u1eddi ta ph\u1ea3i s\u1eed d\u1ee5ng:<\/p>\n<p dir=\"ltr\">A. Tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 th\u01b0\u1edbc k\u1ebb<\/p>\n<p dir=\"ltr\">B. L\u1ef1c l\u01b0\u1ee3ng m\u00f4 -\u0111un v\u00e0 th\u01b0\u1edbc k\u1ebb<\/p>\n<p dir=\"ltr\">C. Tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0111o l\u01b0\u1eddng<\/p>\n<p dir=\"ltr\">D. Thi\u1ebft k\u1ebf v\u00e0 \u0111\u1ed9<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: d<\/p>\n<p dir=\"ltr\">Ph\u1ea7n k\u1ebft lu\u1eadn <\/p>\n<p dir=\"ltr\">B\u00e0i b\u00e1o tr\u00ean \u0111\u00e3 m\u00f4 t\u1ea3 r\u00f5 r\u00e0ng c\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t l\u1ef1c l\u00f2 xo, c\u00e1ch s\u1eed d\u1ee5ng l\u00f2 xo \u0111\u1ec3 \u0111o s\u1ee9c m\u1ea1nh. Hy v\u1ecdng, t\u1ea5t c\u1ea3 ch\u00fang ta \u0111\u1ec1u bi\u1ebft ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n n\u00e0y, \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ec3 li\u00ean h\u1ec7 v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ec3 t\u00ednh to\u00e1n \u0111\u00fang. <\/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>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111o \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c? \u0110\u1ec3 \u0111o \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c, ch\u00fang ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ef1c. V\u1eady h\u00e0nh tinh l\u00e0 g\u00ec? L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 s\u1eed d\u1ee5ng l\u1ef1c \u0111\u1ec3 \u0111o l\u1ef1c? B\u00e0i vi\u1ebft sau \u0111\u00e2y s\u1ebd cung c\u1ea5p \u0111\u1ee7 ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 l\u1ef1c l\u01b0\u1ee3ng &amp; h\u01b0\u1edbng d\u1eabn v\u1ec1 c\u00e1ch&#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-21172","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/21172","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=21172"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/21172\/revisions"}],"predecessor-version":[{"id":25624,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/21172\/revisions\/25624"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=21172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=21172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=21172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}