{"id":568783,"date":"2026-07-27T09:18:08","date_gmt":"2026-07-27T02:18:08","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=568783"},"modified":"2026-07-27T14:56:18","modified_gmt":"2026-07-27T07:56:18","slug":"trong-luc-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/trong-luc-la-gi\/","title":{"rendered":"Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? Ph\u01b0\u01a1ng chi\u1ec1u, c\u00f4ng th\u1ee9c P = mg v\u00e0 b\u00e0i t\u1eadp"},"content":{"rendered":"<p style=\"text-align: justify;\">Tr\u1ecdng l\u1ef1c l\u00e0 l\u1ef1c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t t\u00e1c d\u1ee5ng l\u00ean m\u1ecdi v\u1eadt, c\u00f3 ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng v\u00e0 chi\u1ec1u h\u01b0\u1edbng v\u1ec1 ph\u00eda t\u00e2m Tr\u00e1i \u0110\u1ea5t (h\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi); \u0111\u1ed9 l\u1edbn c\u1ee7a tr\u1ecdng l\u1ef1c g\u1ecdi l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng, t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c P = m\u00b7g. Tr\u1ecdng l\u1ef1c l\u00e0 nguy\u00ean nh\u00e2n khi\u1ebfn m\u1ecdi v\u1eadt khi \u0111\u01b0\u1ee3c th\u1ea3 ra \u0111\u1ec1u r\u01a1i xu\u1ed1ng \u0111\u1ea5t. \u0110\u00e2y l\u00e0 ki\u1ebfn th\u1ee9c V\u1eadt l\u00fd l\u1edbp 6. B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y <b>tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec<\/b>, ph\u01b0\u01a1ng chi\u1ec1u, c\u00f4ng th\u1ee9c, ph\u00e2n bi\u1ec7t tr\u1ecdng l\u1ef1c \u2013 tr\u1ecdng l\u01b0\u1ee3ng \u2013 kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i chi ti\u1ebft.<\/p>\n<h2 style=\"text-align: justify;\"><b>Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec?<\/b><\/h2>\n<p style=\"text-align: justify;\">Tr\u1ecdng l\u1ef1c l\u00e0 l\u1ef1c h\u00fat m\u00e0 Tr\u00e1i \u0110\u1ea5t t\u00e1c d\u1ee5ng l\u00ean c\u00e1c v\u1eadt \u1edf g\u1ea7n b\u1ec1 m\u1eb7t c\u1ee7a n\u00f3. Ch\u00ednh tr\u1ecdng l\u1ef1c gi\u1eef cho m\u1ecdi v\u1eadt n\u1eb1m tr\u00ean m\u1eb7t \u0111\u1ea5t, l\u00e0m qu\u1ea3 t\u00e1o r\u01a1i kh\u1ecfi c\u00e0nh v\u00e0 khi\u1ebfn n\u01b0\u1edbc ch\u1ea3y t\u1eeb cao xu\u1ed1ng th\u1ea5p. Tr\u1ecdng l\u1ef1c th\u1ef1c ch\u1ea5t l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p c\u1ee7a <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/luc-hap-dan-la-gi\/\">l\u1ef1c h\u1ea5p d\u1eabn<\/a> \u2013 l\u1ef1c h\u00fat gi\u1eefa m\u1ecdi v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng. V\u00ec Tr\u00e1i \u0110\u1ea5t c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng r\u1ea5t l\u1edbn n\u00ean l\u1ef1c h\u00fat c\u1ee7a n\u00f3 l\u00ean c\u00e1c v\u1eadt xung quanh th\u1ec3 hi\u1ec7n r\u00f5 r\u1ec7t, v\u00e0 ta g\u1ecdi ri\u00eang l\u1ef1c n\u00e0y l\u00e0 tr\u1ecdng l\u1ef1c.<\/p>\n<p style=\"text-align: justify;\">M\u1ecdi v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1eb7t g\u1ea7n m\u1eb7t \u0111\u1ea5t \u0111\u1ec1u ch\u1ecbu t\u00e1c d\u1ee5ng c\u1ee7a tr\u1ecdng l\u1ef1c, d\u00f9 n\u00f3 \u0111ang \u0111\u1ee9ng y\u00ean hay chuy\u1ec3n \u0111\u1ed9ng. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng l\u1ef1c c\u01a1 b\u1ea3n v\u00e0 quen thu\u1ed9c nh\u1ea5t m\u00e0 b\u1ea1n g\u1eb7p h\u1eb1ng ng\u00e0y.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-570253\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-3.jpg\" alt=\"trong-luc-la-gi-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2 style=\"text-align: justify;\"><b>Ph\u01b0\u01a1ng v\u00e0 chi\u1ec1u c\u1ee7a tr\u1ecdng l\u1ef1c<\/b><\/h2>\n<p style=\"text-align: justify;\">Tr\u1ecdng l\u1ef1c l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng vect\u01a1 n\u00ean lu\u00f4n c\u00f3 ph\u01b0\u01a1ng v\u00e0 chi\u1ec1u x\u00e1c \u0111\u1ecbnh:<\/p>\n<ul style=\"text-align: justify;\">\n<li>Ph\u01b0\u01a1ng: th\u1eb3ng \u0111\u1ee9ng (tr\u00f9ng v\u1edbi ph\u01b0\u01a1ng c\u1ee7a d\u00e2y d\u1ecdi).<\/li>\n<li>Chi\u1ec1u: h\u01b0\u1edbng t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi, v\u1ec1 ph\u00eda t\u00e2m Tr\u00e1i \u0110\u1ea5t.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">\u0110\u00e2y l\u00e0 l\u00fd do khi th\u1ea3 m\u1ed9t v\u1eadt, n\u00f3 lu\u00f4n r\u01a1i theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng ch\u1ee9 kh\u00f4ng r\u01a1i xi\u00ean. Ng\u01b0\u1eddi th\u1ee3 x\u00e2y d\u00f9ng d\u00e2y d\u1ecdi (m\u1ed9t s\u1ee3i d\u00e2y bu\u1ed9c v\u1eadt n\u1eb7ng) ch\u00ednh l\u00e0 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng nh\u1edd tr\u1ecdng l\u1ef1c, t\u1eeb \u0111\u00f3 d\u1ef1ng t\u01b0\u1eddng th\u1eb3ng v\u00e0 c\u1ed9t th\u1eb3ng.<\/p>\n<h2 style=\"text-align: justify;\"><b>Tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 c\u00f4ng th\u1ee9c t\u00ednh<\/b><\/h2>\n<p style=\"text-align: justify;\">\u0110\u1ed9 l\u1edbn c\u1ee7a tr\u1ecdng l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t v\u1eadt \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt \u0111\u00f3, t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c: <b>P = m \u00b7 g<\/b>. Trong \u0111\u00f3:<\/p>\n<ul style=\"text-align: justify;\">\n<li>P: tr\u1ecdng l\u01b0\u1ee3ng (niut\u01a1n, k\u00fd hi\u1ec7u N).<\/li>\n<li>m: kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt (kil\u00f4gam, kg).<\/li>\n<li>g: <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/gia-toc-trong-truong-la-gi\/\">gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng<\/a>, \u1edf g\u1ea7n m\u1eb7t \u0111\u1ea5t g \u2248 9,8 m\/s\u00b2 (trong b\u00e0i to\u00e1n th\u01b0\u1eddng l\u1ea5y tr\u00f2n 10 m\/s\u00b2).<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">V\u00ed d\u1ee5, m\u1ed9t v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng 5 kg th\u00ec tr\u1ecdng l\u01b0\u1ee3ng P = 5 \u00d7 10 = 50 N. C\u00f4ng th\u1ee9c n\u00e0y cho th\u1ea5y tr\u1ecdng l\u01b0\u1ee3ng t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng: v\u1eadt c\u00e0ng n\u1eb7ng (kh\u1ed1i l\u01b0\u1ee3ng c\u00e0ng l\u1edbn) th\u00ec tr\u1ecdng l\u01b0\u1ee3ng c\u00e0ng l\u1edbn. Khi bi\u1ebft tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 g, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 t\u00ednh ng\u01b0\u1ee3c l\u1ea1i kh\u1ed1i l\u01b0\u1ee3ng theo m = P\/g.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-570252\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-2.jpg\" alt=\"trong-luc-la-gi-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2 style=\"text-align: justify;\"><b>Gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng g thay \u0111\u1ed5i theo v\u1ecb tr\u00ed<\/b><\/h2>\n<p style=\"text-align: justify;\">Gi\u00e1 tr\u1ecb g kh\u00f4ng ho\u00e0n to\u00e0n c\u1ed1 \u0111\u1ecbnh m\u00e0 thay \u0111\u1ed5i nh\u1eb9 t\u00f9y n\u01a1i v\u00e0 t\u00f9y thi\u00ean th\u1ec3. Tr\u00ean Tr\u00e1i \u0110\u1ea5t, g dao \u0111\u1ed9ng quanh 9,8 m\/s\u00b2; c\u00e0ng l\u00ean cao (xa t\u00e2m Tr\u00e1i \u0110\u1ea5t) th\u00ec g c\u00e0ng gi\u1ea3m. Tr\u00ean c\u00e1c thi\u00ean th\u1ec3 kh\u00e1c, g kh\u00e1c h\u1eb3n v\u00ec kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 b\u00e1n k\u00ednh c\u1ee7a ch\u00fang kh\u00e1c nhau.<\/p>\n<table>\n<thead>\n<tr>\n<th><b>V\u1ecb tr\u00ed<\/b><\/th>\n<th><b>Gi\u00e1 tr\u1ecb g (m\/s\u00b2)<\/b><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u1ec1 m\u1eb7t Tr\u00e1i \u0110\u1ea5t (trung b\u00ecnh)<\/td>\n<td>\u2248 9,8<\/td>\n<\/tr>\n<tr>\n<td>B\u1ec1 m\u1eb7t M\u1eb7t Tr\u0103ng<\/td>\n<td>\u2248 1,6<\/td>\n<\/tr>\n<tr>\n<td>B\u1ec1 m\u1eb7t Sao H\u1ecfa<\/td>\n<td>\u2248 3,7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: justify;\">V\u00ec tr\u1ecdng l\u01b0\u1ee3ng P = m\u00b7g ph\u1ee5 thu\u1ed9c g, c\u00f9ng m\u1ed9t v\u1eadt s\u1ebd c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng kh\u00e1c nhau \u1edf c\u00e1c n\u01a1i n\u00e0y, d\u00f9 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a n\u00f3 v\u1eabn gi\u1eef nguy\u00ean. \u0110\u00e2y l\u00e0 \u0111i\u1ec3m m\u1ea5u ch\u1ed1t gi\u00fap ph\u00e2n bi\u1ec7t kh\u1ed1i l\u01b0\u1ee3ng v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng.<\/p>\n<h2 style=\"text-align: justify;\"><b>Ph\u00e2n bi\u1ec7t tr\u1ecdng l\u1ef1c, tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng<\/b><\/h2>\n<p style=\"text-align: justify;\">M\u1eb7c d\u00f9 \u0111\u1ec1u li\u00ean quan \u0111\u1ebfn \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt th\u1ec3, tr\u1ecdng l\u1ef1c, tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 ba kh\u00e1i ni\u1ec7m c\u00f3 \u00fd ngh\u0129a v\u00e0 b\u1ea3n ch\u1ea5t kh\u00e1c nhau. Vi\u1ec7c ph\u00e2n bi\u1ec7t r\u00f5 c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap tr\u00e1nh nh\u1ea7m l\u1eabn trong h\u1ecdc t\u1eadp m\u00e0 c\u00f2n l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 hi\u1ec3u \u0111\u00fang c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng v\u00e0 b\u00e0i to\u00e1n trong v\u1eadt l\u00fd.<\/p>\n<table>\n<thead>\n<tr>\n<th><b>\u0110\u1ea1i l\u01b0\u1ee3ng<\/b><\/th>\n<th><b>B\u1ea3n ch\u1ea5t<\/b><\/th>\n<th><b>\u0110\u01a1n v\u1ecb<\/b><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Kh\u1ed1i l\u01b0\u1ee3ng (m)<\/td>\n<td>L\u01b0\u1ee3ng ch\u1ea5t ch\u1ee9a trong v\u1eadt, kh\u00f4ng \u0111\u1ed5i theo v\u1ecb tr\u00ed<\/td>\n<td>kil\u00f4gam (kg)<\/td>\n<\/tr>\n<tr>\n<td>Tr\u1ecdng l\u1ef1c<\/td>\n<td>L\u1ef1c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t t\u00e1c d\u1ee5ng l\u00ean v\u1eadt (\u0111\u1ea1i l\u01b0\u1ee3ng vect\u01a1)<\/td>\n<td>niut\u01a1n (N)<\/td>\n<\/tr>\n<tr>\n<td>Tr\u1ecdng l\u01b0\u1ee3ng (P)<\/td>\n<td>\u0110\u1ed9 l\u1edbn c\u1ee7a tr\u1ecdng l\u1ef1c, P = m\u00b7g<\/td>\n<td>niut\u01a1n (N)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: justify;\">L\u01b0u \u00fd: kh\u1ed1i l\u01b0\u1ee3ng kh\u00f4ng \u0111\u1ed5i d\u00f9 \u1edf \u0111\u00e2u, nh\u01b0ng tr\u1ecdng l\u01b0\u1ee3ng thay \u0111\u1ed5i theo g. V\u00ed d\u1ee5, c\u00f9ng m\u1ed9t v\u1eadt s\u1ebd &#8220;nh\u1eb9&#8221; h\u01a1n tr\u00ean M\u1eb7t Tr\u0103ng v\u00ec g \u1edf \u0111\u00f3 nh\u1ecf h\u01a1n (kho\u1ea3ng 1,6 m\/s\u00b2 so v\u1edbi 9,8 m\/s\u00b2 tr\u00ean Tr\u00e1i \u0110\u1ea5t), n\u00ean tr\u1ecdng l\u01b0\u1ee3ng ch\u1ec9 c\u00f2n kho\u1ea3ng m\u1ed9t ph\u1ea7n s\u00e1u.<\/p>\n<h2 style=\"text-align: justify;\"><b>\u1ee8ng d\u1ee5ng v\u00e0 v\u00ed d\u1ee5 c\u1ee7a tr\u1ecdng l\u1ef1c trong \u0111\u1eddi s\u1ed1ng<\/b><\/h2>\n<p style=\"text-align: justify;\">Tr\u1ecdng l\u1ef1c hi\u1ec7n di\u1ec7n trong h\u1ea7u h\u1ebft m\u1ecdi ho\u1ea1t \u0111\u1ed9ng th\u01b0\u1eddng ng\u00e0y, d\u00f9 b\u1ea1n c\u00f3 \u0111\u1ec3 \u00fd hay kh\u00f4ng:<\/p>\n<ul style=\"text-align: justify;\">\n<li>N\u01b0\u1edbc m\u01b0a r\u01a1i xu\u1ed1ng \u0111\u1ea5t, th\u00e1c n\u01b0\u1edbc ch\u1ea3y t\u1eeb tr\u00ean cao xu\u1ed1ng th\u1ea5p.<\/li>\n<li>Qu\u1ea3 b\u00f3ng n\u00e9m l\u00ean r\u1ed3i r\u01a1i xu\u1ed1ng, ng\u01b0\u1eddi nh\u1ea3y d\u00f9 \u0111\u01b0\u1ee3c k\u00e9o v\u1ec1 m\u1eb7t \u0111\u1ea5t.<\/li>\n<li>C\u00e2n \u0111\u1ed3ng h\u1ed3 v\u00e0 c\u00e2n l\u00f2 xo \u0111o tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt d\u1ef1a tr\u00ean tr\u1ecdng l\u1ef1c.<\/li>\n<li>Kim d\u00e2y d\u1ecdi v\u00e0 b\u1ecdt th\u1ee7y (niv\u00f4) trong x\u00e2y d\u1ef1ng d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng v\u00e0 m\u1eb7t ph\u1eb3ng ngang.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Nh\u1edd hi\u1ec3u \u0111\u00fang v\u1ec1 tr\u1ecdng l\u1ef1c, con ng\u01b0\u1eddi thi\u1ebft k\u1ebf \u0111\u01b0\u1ee3c nh\u00e0 c\u1eeda v\u1eefng ch\u1eafc, t\u00ednh to\u00e1n qu\u1ef9 \u0111\u1ea1o t\u00ean l\u1eeda v\u00e0 gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed9ng r\u01a1i t\u1ef1 do c\u1ee7a c\u00e1c v\u1eadt.<\/p>\n<h2 style=\"text-align: justify;\"><b>B\u00e0i t\u1eadp v\u1eadn d\u1ee5ng c\u00f3 l\u1eddi gi\u1ea3i v\u1ec1 tr\u1ecdng l\u1ef1c<\/b><\/h2>\n<p style=\"text-align: justify;\"><b>B\u00e0i 1:<\/b> M\u1ed9t v\u1eadt kh\u1ed1i l\u01b0\u1ee3ng 8 kg. T\u00ednh tr\u1ecdng l\u01b0\u1ee3ng (l\u1ea5y g = 10 m\/s\u00b2).<\/p>\n<p style=\"text-align: justify;\">L\u1eddi gi\u1ea3i: \u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c P = m\u00b7g = 8 \u00d7 10 = 80 N. V\u1eady tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt l\u00e0 80 N.<\/p>\n<p style=\"text-align: justify;\"><b>B\u00e0i 2:<\/b> M\u1ed9t v\u1eadt c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 45 N. T\u00ednh kh\u1ed1i l\u01b0\u1ee3ng (g = 10 m\/s\u00b2).<\/p>\n<p style=\"text-align: justify;\">L\u1eddi gi\u1ea3i: T\u1eeb P = m\u00b7g suy ra m = P\/g = 45\/10 = 4,5 kg. V\u1eady kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt l\u00e0 4,5 kg.<\/p>\n<p style=\"text-align: justify;\"><b>B\u00e0i 3:<\/b> M\u1ed9t v\u1eadt kh\u1ed1i l\u01b0\u1ee3ng 2 kg. T\u00ednh tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a n\u00f3 tr\u00ean Tr\u00e1i \u0110\u1ea5t (g = 9,8 m\/s\u00b2) v\u00e0 tr\u00ean M\u1eb7t Tr\u0103ng (g = 1,6 m\/s\u00b2).<\/p>\n<p style=\"text-align: justify;\">L\u1eddi gi\u1ea3i: Tr\u00ean Tr\u00e1i \u0110\u1ea5t P\u2081 = 2 \u00d7 9,8 = 19,6 N. Tr\u00ean M\u1eb7t Tr\u0103ng P\u2082 = 2 \u00d7 1,6 = 3,2 N. Kh\u1ed1i l\u01b0\u1ee3ng v\u1eabn l\u00e0 2 kg \u1edf c\u1ea3 hai n\u01a1i, ch\u1ec9 tr\u1ecdng l\u01b0\u1ee3ng thay \u0111\u1ed5i.<\/p>\n<p style=\"text-align: justify;\"><b>B\u00e0i 4:<\/b> Tr\u1ecdng l\u1ef1c c\u00f3 ph\u01b0\u01a1ng v\u00e0 chi\u1ec1u th\u1ebf n\u00e0o?<\/p>\n<p style=\"text-align: justify;\">L\u1eddi gi\u1ea3i: Tr\u1ecdng l\u1ef1c c\u00f3 ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, chi\u1ec1u h\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi (v\u1ec1 ph\u00eda t\u00e2m Tr\u00e1i \u0110\u1ea5t).<\/p>\n<p style=\"text-align: justify;\"><b>B\u00e0i 5 (tr\u1eafc nghi\u1ec7m):<\/b> \u0110\u01a1n v\u1ecb c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 g\u00ec? A. kg  B. N  C. m\/s\u00b2  D. g.<\/p>\n<p style=\"text-align: justify;\">L\u1eddi gi\u1ea3i: Tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a m\u1ed9t l\u1ef1c n\u00ean c\u00f3 \u0111\u01a1n v\u1ecb l\u00e0 niut\u01a1n. \u0110\u00e1p \u00e1n: B.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-570251\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-1.jpg\" alt=\"trong-luc-la-gi-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luc-la-gi-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2 style=\"text-align: justify;\"><b>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 tr\u1ecdng l\u1ef1c<\/b><\/h2>\n<h3 style=\"text-align: justify;\"><b>Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec?<\/b><\/h3>\n<p style=\"text-align: justify;\">Tr\u1ecdng l\u1ef1c l\u00e0 l\u1ef1c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t t\u00e1c d\u1ee5ng l\u00ean v\u1eadt, c\u00f3 ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng v\u00e0 chi\u1ec1u h\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi v\u1ec1 ph\u00eda t\u00e2m Tr\u00e1i \u0110\u1ea5t.<\/p>\n<h3 style=\"text-align: justify;\"><b>C\u00f4ng th\u1ee9c t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 g\u00ec?<\/b><\/h3>\n<p style=\"text-align: justify;\">Tr\u1ecdng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c P = m\u00b7g, v\u1edbi m l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng (kg) v\u00e0 g l\u00e0 gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng (th\u01b0\u1eddng l\u1ea5y 10 m\/s\u00b2).<\/p>\n<h3 style=\"text-align: justify;\"><b>Tr\u1ecdng l\u1ef1c kh\u00e1c tr\u1ecdng l\u01b0\u1ee3ng th\u1ebf n\u00e0o?<\/b><\/h3>\n<p style=\"text-align: justify;\">Tr\u1ecdng l\u1ef1c l\u00e0 l\u1ef1c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t t\u00e1c d\u1ee5ng l\u00ean v\u1eadt, c\u00f2n tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a tr\u1ecdng l\u1ef1c \u0111\u00f3, t\u00ednh b\u1eb1ng \u0111\u01a1n v\u1ecb niut\u01a1n.<\/p>\n<h3 style=\"text-align: justify;\"><b>Kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng kh\u00e1c nhau ra sao?<\/b><\/h3>\n<p style=\"text-align: justify;\">Kh\u1ed1i l\u01b0\u1ee3ng \u0111o b\u1eb1ng kg v\u00e0 kh\u00f4ng \u0111\u1ed5i theo v\u1ecb tr\u00ed, c\u00f2n tr\u1ecdng l\u01b0\u1ee3ng \u0111o b\u1eb1ng N v\u00e0 thay \u0111\u1ed5i theo gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng g \u1edf t\u1eebng n\u01a1i.<\/p>\n<h3 style=\"text-align: justify;\"><b>V\u00ec sao v\u1eadt nh\u1eb9 h\u01a1n tr\u00ean M\u1eb7t Tr\u0103ng?<\/b><\/h3>\n<p style=\"text-align: justify;\">V\u00ec tr\u1ecdng l\u01b0\u1ee3ng ph\u1ee5 thu\u1ed9c g, m\u00e0 g tr\u00ean M\u1eb7t Tr\u0103ng (kho\u1ea3ng 1,6 m\/s\u00b2) nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi Tr\u00e1i \u0110\u1ea5t (9,8 m\/s\u00b2), n\u00ean c\u00f9ng m\u1ed9t v\u1eadt c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng nh\u1ecf h\u01a1n kho\u1ea3ng s\u00e1u l\u1ea7n.<\/p>\n<h3 style=\"text-align: justify;\"><b>Ph\u01b0\u01a1ng c\u1ee7a tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec?<\/b><\/h3>\n<p style=\"text-align: justify;\">Tr\u1ecdng l\u1ef1c c\u00f3 ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, tr\u00f9ng v\u1edbi ph\u01b0\u01a1ng c\u1ee7a d\u00e2y d\u1ecdi, v\u00e0 chi\u1ec1u h\u01b0\u1edbng v\u1ec1 t\u00e2m Tr\u00e1i \u0110\u1ea5t.<\/p>\n<p><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Tr\u1ecdng l\u1ef1c l\u00e0 l\u1ef1c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t t\u00e1c d\u1ee5ng l\u00ean v\u1eadt, c\u00f3 ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng v\u00e0 chi\u1ec1u h\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi v\u1ec1 ph\u00eda t\u00e2m Tr\u00e1i \u0110\u1ea5t.\"}},{\"@type\":\"Question\",\"name\":\"C\u00f4ng th\u1ee9c t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 g\u00ec?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Tr\u1ecdng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c P = m\u00b7g, v\u1edbi m l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng (kg) v\u00e0 g l\u00e0 gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng (th\u01b0\u1eddng l\u1ea5y 10 m\/s\u00b2).\"}},{\"@type\":\"Question\",\"name\":\"Tr\u1ecdng l\u1ef1c kh\u00e1c tr\u1ecdng l\u01b0\u1ee3ng th\u1ebf n\u00e0o?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Tr\u1ecdng l\u1ef1c l\u00e0 l\u1ef1c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t t\u00e1c d\u1ee5ng l\u00ean v\u1eadt, c\u00f2n tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a tr\u1ecdng l\u1ef1c \u0111\u00f3, t\u00ednh b\u1eb1ng \u0111\u01a1n v\u1ecb niut\u01a1n.\"}},{\"@type\":\"Question\",\"name\":\"Kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng kh\u00e1c nhau ra sao?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Kh\u1ed1i l\u01b0\u1ee3ng \u0111o b\u1eb1ng kg v\u00e0 kh\u00f4ng \u0111\u1ed5i theo v\u1ecb tr\u00ed, c\u00f2n tr\u1ecdng l\u01b0\u1ee3ng \u0111o b\u1eb1ng N v\u00e0 thay \u0111\u1ed5i theo gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng g \u1edf t\u1eebng n\u01a1i.\"}},{\"@type\":\"Question\",\"name\":\"V\u00ec sao v\u1eadt nh\u1eb9 h\u01a1n tr\u00ean M\u1eb7t Tr\u0103ng?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"V\u00ec tr\u1ecdng l\u01b0\u1ee3ng ph\u1ee5 thu\u1ed9c g, m\u00e0 g tr\u00ean M\u1eb7t Tr\u0103ng (kho\u1ea3ng 1,6 m\/s\u00b2) nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi Tr\u00e1i \u0110\u1ea5t (9,8 m\/s\u00b2), n\u00ean c\u00f9ng m\u1ed9t v\u1eadt c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng nh\u1ecf h\u01a1n kho\u1ea3ng s\u00e1u l\u1ea7n.\"}},{\"@type\":\"Question\",\"name\":\"Ph\u01b0\u01a1ng c\u1ee7a tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Tr\u1ecdng l\u1ef1c c\u00f3 ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, tr\u00f9ng v\u1edbi ph\u01b0\u01a1ng c\u1ee7a d\u00e2y d\u1ecdi, v\u00e0 chi\u1ec1u h\u01b0\u1edbng v\u1ec1 t\u00e2m Tr\u00e1i \u0110\u1ea5t.\"}}]}<\/script><\/p>\n<h2 style=\"text-align: justify;\"><b>K\u1ebft lu\u1eadn<\/b><\/h2>\n<p style=\"text-align: justify;\">T\u00f3m l\u1ea1i, tr\u1ecdng l\u1ef1c l\u00e0 l\u1ef1c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t, c\u00f3 ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng chi\u1ec1u h\u01b0\u1edbng xu\u1ed1ng, v\u1edbi \u0111\u1ed9 l\u1edbn (tr\u1ecdng l\u01b0\u1ee3ng) t\u00ednh b\u1eb1ng P = m\u00b7g. Ph\u00e2n bi\u1ec7t r\u00f5 kh\u1ed1i l\u01b0\u1ee3ng, tr\u1ecdng l\u1ef1c v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng s\u1ebd gi\u00fap b\u1ea1n tr\u00e1nh nh\u1ea7m l\u1eabn khi l\u00e0m b\u00e0i. \u0110\u1ec3 h\u1ecdc th\u00eam, m\u1eddi b\u1ea1n tham kh\u1ea3o c\u00e1c b\u00e0i <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/1-kilogam-kg-bang-bao-nhieu-gam-g\/\">1 kg b\u1eb1ng bao nhi\u00eau gam<\/a>, <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/cong-thuc-tinh-quang-duong\/\">c\u00f4ng th\u1ee9c t\u00ednh qu\u00e3ng \u0111\u01b0\u1eddng<\/a> v\u00e0 <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/1-nam-anh-sang-bang-bao-nhieu-km\/\">m\u1ed9t n\u0103m \u00e1nh s\u00e1ng b\u1eb1ng bao nhi\u00eau km<\/a> tr\u00ean chuy\u00ean m\u1ee5c tin t\u1ee9c c\u1ee7a Ho\u00e0ng H\u00e0 Mobile.<\/p>\n<p style=\"text-align: justify;\"><b>Xem th\u00eam:<\/b><\/p>\n<ul>\n<li><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/hinh-thang\/\">H\u00ecnh thang l\u00e0 g\u00ec? C\u00e1c lo\u1ea1i, t\u00ednh ch\u1ea5t v\u00e0 c\u00f4ng th\u1ee9c t\u00ednh<\/a><\/li>\n<li><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/dong-luong\/\">\u0110\u1ed9ng l\u01b0\u1ee3ng l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c, \u0111\u1ecbnh lu\u1eadt b\u1ea3o to\u00e0n v\u00e0 b\u00e0i t\u1eadp<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Tr\u1ecdng l\u1ef1c l\u00e0 l\u1ef1c h\u00fat c\u1ee7a Tr\u00e1i \u0110\u1ea5t t\u00e1c d\u1ee5ng l\u00ean m\u1ecdi v\u1eadt, c\u00f3 ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng v\u00e0 chi\u1ec1u h\u01b0\u1edbng v\u1ec1 ph\u00eda t\u00e2m Tr\u00e1i \u0110\u1ea5t (h\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi); \u0111\u1ed9 l\u1edbn c\u1ee7a tr\u1ecdng l\u1ef1c g\u1ecdi l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng, t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c P = m\u00b7g. Tr\u1ecdng l\u1ef1c l\u00e0 nguy\u00ean nh\u00e2n khi\u1ebfn m\u1ecdi v\u1eadt khi \u0111\u01b0\u1ee3c th\u1ea3 [&hellip;]<\/p>\n","protected":false},"author":84,"featured_media":570250,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"tr\u1ecdng l\u1ef1c","_yoast_wpseo_title":"Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c P = mg v\u00e0 b\u00e0i t\u1eadp","_yoast_wpseo_metadesc":"Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u ph\u01b0\u01a1ng chi\u1ec1u, c\u00f4ng th\u1ee9c P = mg, ph\u00e2n bi\u1ec7t tr\u1ecdng l\u1ef1c - tr\u1ecdng l\u01b0\u1ee3ng - kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i. Xem chi ti\u1ebft t\u1ea1i Ho\u00e0ng H\u00e0 Mobile.","footnotes":""},"categories":[29235,3910,30453],"tags":[],"class_list":["post-568783","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goc-to-mo","category-kham-pha","category-kien-thuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c P = mg v\u00e0 b\u00e0i t\u1eadp<\/title>\n<meta name=\"description\" content=\"Tr\u1ecdng l\u1ef1c l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u ph\u01b0\u01a1ng chi\u1ec1u, c\u00f4ng th\u1ee9c P = mg, ph\u00e2n bi\u1ec7t tr\u1ecdng l\u1ef1c - tr\u1ecdng l\u01b0\u1ee3ng - kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i. 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