{"id":570906,"date":"2026-07-27T15:07:43","date_gmt":"2026-07-27T08:07:43","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=570906"},"modified":"2026-07-27T15:07:43","modified_gmt":"2026-07-27T08:07:43","slug":"trong-luong-rieng-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/trong-luong-rieng-la-gi\/","title":{"rendered":"Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c d = P\/V v\u00e0 b\u1ea3ng tra c\u1ee9u"},"content":{"rendered":"<p><strong>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a m\u1ed9t ch\u1ea5t l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t \u0111\u01a1n v\u1ecb th\u1ec3 t\u00edch ch\u1ea5t \u0111\u00f3, \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00f4ng th\u1ee9c d = P\/V, v\u1edbi \u0111\u01a1n v\u1ecb l\u00e0 niut\u01a1n tr\u00ean m\u00e9t kh\u1ed1i (N\/m\u00b3).<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng trong ch\u01b0\u01a1ng tr\u00ecnh V\u1eadt l\u00fd l\u1edbp 6, th\u01b0\u1eddng b\u1ecb nh\u1ea7m l\u1eabn v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang. N\u1eafm v\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0y gi\u00fap b\u1ea1n gi\u1ea3i nhanh c\u00e1c b\u00e0i to\u00e1n t\u00ednh t\u1ea3i tr\u1ecdng, so s\u00e1nh v\u1eadt li\u1ec7u v\u00e0 gi\u1ea3i th\u00edch hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt n\u1ed5i hay ch\u00ecm. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd tr\u00ecnh b\u00e0y tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec, c\u00f4ng th\u1ee9c t\u00ednh, b\u1ea3ng tra c\u1ee9u c\u1ee7a m\u1ed9t s\u1ed1 ch\u1ea5t ph\u1ed5 bi\u1ebfn, c\u00e1ch ph\u00e2n bi\u1ec7t v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u00f9ng nhi\u1ec1u b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i chi ti\u1ebft \u0111\u1ec3 b\u1ea1n d\u1ec5 \u00e1p d\u1ee5ng.<\/p>\n<h2>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec?<\/h2>\n<p>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a m\u1ed9t ch\u1ea5t l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t m\u00e9t kh\u1ed1i ch\u1ea5t \u0111\u00f3, \u0111\u01b0\u1ee3c k\u00fd hi\u1ec7u l\u00e0 d. \u0110\u1ea1i l\u01b0\u1ee3ng n\u00e0y cho bi\u1ebft m\u1ed7i \u0111\u01a1n v\u1ecb th\u1ec3 t\u00edch c\u1ee7a ch\u1ea5t &#8220;n\u1eb7ng&#8221; bao nhi\u00eau niut\u01a1n khi \u0111\u1eb7t \u1edf g\u1ea7n m\u1eb7t \u0111\u1ea5t. Ch\u1ea5t n\u00e0o c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u1edbn th\u00ec c\u00f9ng m\u1ed9t th\u1ec3 t\u00edch s\u1ebd c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng l\u1edbn h\u01a1n, t\u1ee9c l\u00e0 k\u00e9o xu\u1ed1ng m\u1ea1nh h\u01a1n d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a tr\u1ecdng l\u1ef1c.<\/p>\n<p>V\u00ed d\u1ee5, m\u1ed9t m\u00e9t kh\u1ed1i s\u1eaft n\u1eb7ng h\u01a1n h\u1eb3n m\u1ed9t m\u00e9t kh\u1ed1i g\u1ed7, \u0111\u00f3 l\u00e0 v\u00ec s\u1eaft c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u1edbn h\u01a1n g\u1ed7 r\u1ea5t nhi\u1ec1u. Nh\u1edd \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0y, ta c\u00f3 th\u1ec3 so s\u00e1nh m\u1ee9c \u0111\u1ed9 &#8220;n\u1eb7ng&#8221; c\u1ee7a c\u00e1c ch\u1ea5t m\u1ed9t c\u00e1ch c\u00f4ng b\u1eb1ng khi c\u00f9ng x\u00e9t tr\u00ean m\u1ed9t th\u1ec3 t\u00edch chu\u1ea9n.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-570909\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-1.jpg\" alt=\"trong-luong-rieng-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>C\u00f4ng th\u1ee9c t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang<\/h2>\n<p>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt chia cho th\u1ec3 t\u00edch c\u1ee7a v\u1eadt \u0111\u00f3. C\u00f4ng th\u1ee9c t\u1ed5ng qu\u00e1t nh\u01b0 sau:<\/p>\n<p><strong>d = P \/ V<\/strong><\/p>\n<p>Trong \u0111\u00f3 c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng v\u00e0 \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c quy \u01b0\u1edbc c\u1ee5 th\u1ec3 trong b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0110\u1ea1i l\u01b0\u1ee3ng<\/th>\n<th>\u00dd ngh\u0129a<\/th>\n<th>\u0110\u01a1n v\u1ecb<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>d<\/td>\n<td>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a ch\u1ea5t<\/td>\n<td>N\/m\u00b3 (niut\u01a1n tr\u00ean m\u00e9t kh\u1ed1i)<\/td>\n<\/tr>\n<tr>\n<td>P<\/td>\n<td>Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt<\/td>\n<td>N (niut\u01a1n)<\/td>\n<\/tr>\n<tr>\n<td>V<\/td>\n<td>Th\u1ec3 t\u00edch c\u1ee7a v\u1eadt<\/td>\n<td>m\u00b3 (m\u00e9t kh\u1ed1i)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>T\u1eeb c\u00f4ng th\u1ee9c g\u1ed1c, ta d\u1ec5 d\u00e0ng suy ra hai c\u00f4ng th\u1ee9c bi\u1ebfn \u0111\u1ed5i ph\u1ee5c v\u1ee5 gi\u1ea3i b\u00e0i t\u1eadp:<\/p>\n<ul>\n<li>T\u00ednh tr\u1ecdng l\u01b0\u1ee3ng khi bi\u1ebft d v\u00e0 V: <strong>P = d \u00d7 V<\/strong>.<\/li>\n<li>T\u00ednh th\u1ec3 t\u00edch khi bi\u1ebft P v\u00e0 d: <strong>V = P \/ d<\/strong>.<\/li>\n<\/ul>\n<p>L\u01b0u \u00fd khi t\u00ednh to\u00e1n, b\u1ea1n c\u1ea7n \u0111\u1ed5i t\u1ea5t c\u1ea3 \u0111\u1ea1i l\u01b0\u1ee3ng v\u1ec1 \u0111\u01a1n v\u1ecb chu\u1ea9n (N v\u00e0 m\u00b3) tr\u01b0\u1edbc khi thay s\u1ed1, tr\u00e1nh nh\u1ea7m l\u1eabn gi\u1eefa gam v\u1edbi kil\u00f4gam hay x\u0103ng-ti-m\u00e9t kh\u1ed1i v\u1edbi m\u00e9t kh\u1ed1i.<\/p>\n<h2>M\u1ed1i li\u00ean h\u1ec7 v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang<\/h2>\n<p>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi nhau qua m\u1ed9t c\u00f4ng th\u1ee9c \u0111\u01a1n gi\u1ea3n:<\/p>\n<p><strong>d = 10 \u00d7 D<\/strong><\/p>\n<p>Trong \u0111\u00f3 D l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a ch\u1ea5t, \u0111o b\u1eb1ng kil\u00f4gam tr\u00ean m\u00e9t kh\u1ed1i (kg\/m\u00b3). L\u00fd do c\u00f3 h\u1ec7 s\u1ed1 10 l\u00e0 v\u00ec tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng li\u00ean h\u1ec7 qua c\u00f4ng th\u1ee9c P = 10 \u00d7 m \u1edf g\u1ea7n m\u1eb7t \u0111\u1ea5t, khi ta l\u1ea5y gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng g \u2248 10 m\/s\u00b2. N\u1ebfu c\u1ea7n \u0111\u1ed9 ch\u00ednh x\u00e1c cao h\u01a1n, b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng g = 9,8 m\/s\u00b2, khi \u0111\u00f3 d = 9,8 \u00d7 D.<\/p>\n<p>V\u00ed d\u1ee5, n\u01b0\u1edbc c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang D = 1.000 kg\/m\u00b3 n\u00ean tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang d = 10 \u00d7 1.000 = 10.000 N\/m\u00b3. Gi\u00e1 tr\u1ecb c\u1ee7a gia t\u1ed1c g thay \u0111\u1ed5i r\u1ea5t \u00edt gi\u1eefa c\u00e1c v\u1ecb tr\u00ed tr\u00ean Tr\u00e1i \u0110\u1ea5t, n\u00ean v\u1edbi b\u00e0i to\u00e1n l\u1edbp 6 ta th\u01b0\u1eddng quy \u01b0\u1edbc l\u1ea5y tr\u00f2n g = 10 m\/s\u00b3 cho \u0111\u01a1n gi\u1ea3n.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-570910\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-2.jpg\" alt=\"trong-luong-rieng-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>Ph\u00e2n bi\u1ec7t tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang<\/h2>\n<p>Hai \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0y r\u1ea5t d\u1ec5 b\u1ecb nh\u1ea7m l\u1eabn v\u00ec t\u00ean g\u1ecdi v\u00e0 c\u00e1ch t\u00ednh g\u1ea7n gi\u1ed1ng nhau, nh\u01b0ng ch\u00fang c\u00f3 \u0111\u01a1n v\u1ecb v\u00e0 \u00fd ngh\u0129a kh\u00e1c nhau. B\u1ea3ng sau gi\u00fap b\u1ea1n ph\u00e2n bi\u1ec7t nhanh:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ti\u00eau ch\u00ed<\/th>\n<th>Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang (D)<\/th>\n<th>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang (d)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ecbnh ngh\u0129a<\/td>\n<td>Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a 1 \u0111\u01a1n v\u1ecb th\u1ec3 t\u00edch<\/td>\n<td>Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a 1 \u0111\u01a1n v\u1ecb th\u1ec3 t\u00edch<\/td>\n<\/tr>\n<tr>\n<td>C\u00f4ng th\u1ee9c<\/td>\n<td>D = m \/ V<\/td>\n<td>d = P \/ V<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u01a1n v\u1ecb<\/td>\n<td>kg\/m\u00b3<\/td>\n<td>N\/m\u00b3<\/td>\n<\/tr>\n<tr>\n<td>Ph\u1ee5 thu\u1ed9c v\u00e0o g<\/td>\n<td>Kh\u00f4ng<\/td>\n<td>C\u00f3 (qua tr\u1ecdng l\u01b0\u1ee3ng P)<\/td>\n<\/tr>\n<tr>\n<td>Li\u00ean h\u1ec7<\/td>\n<td colspan=\"2\">d = 10 \u00d7 D (l\u1ea5y g \u2248 10 m\/s\u00b2)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110i\u1ec3m m\u1ea5u ch\u1ed1t c\u1ea7n nh\u1edb: kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang g\u1eafn v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng (kg) n\u00ean kh\u00f4ng \u0111\u1ed5i d\u00f9 \u1edf \u0111\u00e2u, c\u00f2n tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang g\u1eafn v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng (N) n\u00ean s\u1ebd thay \u0111\u1ed5i n\u1ebfu gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng thay \u0111\u1ed5i. \u0110\u00f3 l\u00e0 l\u00fd do m\u1ed9t v\u1eadt \u1edf M\u1eb7t Tr\u0103ng c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang nh\u1ecf h\u01a1n \u1edf Tr\u00e1i \u0110\u1ea5t, d\u00f9 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang v\u1eabn gi\u1eef nguy\u00ean.<\/p>\n<h2>B\u1ea3ng tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang m\u1ed9t s\u1ed1 ch\u1ea5t<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng tra c\u1ee9u tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a m\u1ed9t s\u1ed1 ch\u1ea5t th\u01b0\u1eddng g\u1eb7p, t\u00ednh theo g \u2248 10 m\/s\u00b2. B\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng b\u1ea3ng n\u00e0y \u0111\u1ec3 \u0111\u1ed1i chi\u1ebfu k\u1ebft qu\u1ea3 b\u00e0i t\u1eadp ho\u1eb7c nh\u1eadn bi\u1ebft m\u1ed9t ch\u1ea5t qua tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u00f3:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ch\u1ea5t<\/th>\n<th>Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang D (kg\/m\u00b3)<\/th>\n<th>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang d (N\/m\u00b3)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>N\u01b0\u1edbc<\/td>\n<td>1.000<\/td>\n<td>10.000<\/td>\n<\/tr>\n<tr>\n<td>Nh\u00f4m<\/td>\n<td>2.700<\/td>\n<td>27.000<\/td>\n<\/tr>\n<tr>\n<td>S\u1eaft (th\u00e9p)<\/td>\n<td>7.800<\/td>\n<td>78.000<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed3ng<\/td>\n<td>8.900<\/td>\n<td>89.000<\/td>\n<\/tr>\n<tr>\n<td>Ch\u00ec<\/td>\n<td>11.300<\/td>\n<td>113.000<\/td>\n<\/tr>\n<tr>\n<td>D\u1ea7u \u0103n<\/td>\n<td>800<\/td>\n<td>8.000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>C\u00f3 th\u1ec3 th\u1ea5y d\u1ea7u \u0103n c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang nh\u1ecf h\u01a1n n\u01b0\u1edbc, \u0111\u00f3 l\u00e0 l\u00fd do d\u1ea7u lu\u00f4n n\u1ed5i l\u00ean tr\u00ean khi \u0111\u1ed5 v\u00e0o n\u01b0\u1edbc. Ng\u01b0\u1ee3c l\u1ea1i, m\u1ed9t kh\u1ed1i s\u1eaft hay ch\u00ec s\u1ebd ch\u00ecm v\u00ec tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a ch\u00fang l\u1edbn h\u01a1n n\u01b0\u1edbc r\u1ea5t nhi\u1ec1u.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-570911\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-3.jpg\" alt=\"trong-luong-rieng-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>B\u00e0i t\u1eadp v\u1eadn d\u1ee5ng c\u00f3 l\u1eddi gi\u1ea3i<\/h2>\n<p>\u0110\u1ec3 n\u1eafm ch\u1eafc c\u00e1ch \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c, b\u1ea1n h\u00e3y c\u00f9ng gi\u1ea3i m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn v\u1eadn d\u1ee5ng d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n<ul>\n<li><strong>B\u00e0i 1:<\/strong> M\u1ed9t v\u1eadt c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 78 N v\u00e0 th\u1ec3 t\u00edch 0,001 m\u00b3. T\u00ednh tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a ch\u1ea5t l\u00e0m v\u1eadt. <em>L\u1eddi gi\u1ea3i:<\/em> \u00c1p d\u1ee5ng d = P\/V = 78 \/ 0,001 = 78.000 N\/m\u00b3. \u0110\u1ed1i chi\u1ebfu b\u1ea3ng tra, \u0111\u00e2y ch\u00ednh l\u00e0 s\u1eaft.<\/li>\n<li><strong>B\u00e0i 2:<\/strong> N\u01b0\u1edbc c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 1.000 kg\/m\u00b3. T\u00ednh tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u01b0\u1edbc. <em>L\u1eddi gi\u1ea3i:<\/em> D\u00f9ng c\u00f4ng th\u1ee9c li\u00ean h\u1ec7 d = 10 \u00d7 D = 10 \u00d7 1.000 = 10.000 N\/m\u00b3.<\/li>\n<li><strong>B\u00e0i 3:<\/strong> M\u1ed9t kh\u1ed1i nh\u00f4m c\u00f3 th\u1ec3 t\u00edch 0,5 m\u00b3, tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang d = 27.000 N\/m\u00b3. T\u00ednh tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a kh\u1ed1i nh\u00f4m. <em>L\u1eddi gi\u1ea3i:<\/em> \u00c1p d\u1ee5ng P = d \u00d7 V = 27.000 \u00d7 0,5 = 13.500 N.<\/li>\n<li><strong>B\u00e0i 4:<\/strong> M\u1ed9t th\u00f9ng d\u1ea7u \u0103n c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng 240 N, tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a d\u1ea7u l\u00e0 8.000 N\/m\u00b3. T\u00ednh th\u1ec3 t\u00edch d\u1ea7u. <em>L\u1eddi gi\u1ea3i:<\/em> D\u00f9ng V = P \/ d = 240 \/ 8.000 = 0,03 m\u00b3.<\/li>\n<li><strong>B\u00e0i 5 (tr\u1eafc nghi\u1ec7m):<\/strong> \u0110\u01a1n v\u1ecb c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec? A. kg\/m\u00b3 &nbsp; B. N\/m\u00b3 &nbsp; C. N &nbsp; D. kg. <em>\u0110\u00e1p \u00e1n:<\/em> B. N\/m\u00b3.<\/li>\n<\/ul>\n<h2>\u1ee8ng d\u1ee5ng c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang trong th\u1ef1c t\u1ebf<\/h2>\n<p>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang kh\u00f4ng ch\u1ec9 l\u00e0 ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft m\u00e0 c\u00f2n c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng thi\u1ebft th\u1ef1c. Trong x\u00e2y d\u1ef1ng, ng\u01b0\u1eddi ta d\u00f9ng n\u00f3 \u0111\u1ec3 t\u00ednh t\u1ea3i tr\u1ecdng c\u1ee7a v\u1eadt li\u1ec7u nh\u01b0 b\u00ea t\u00f4ng, th\u00e9p hay g\u1ea1ch nh\u1eb1m thi\u1ebft k\u1ebf k\u1ebft c\u1ea5u ch\u1ecbu l\u1ef1c an to\u00e0n. Trong v\u1eadn t\u1ea3i, tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang gi\u00fap \u01b0\u1edbc l\u01b0\u1ee3ng nhanh tr\u1ecdng l\u01b0\u1ee3ng h\u00e0ng h\u00f3a khi \u0111\u00e3 bi\u1ebft th\u1ec3 t\u00edch, ph\u1ee5c v\u1ee5 t\u00ednh c\u01b0\u1edbc v\u00e0 ph\u00e2n b\u1ed1 t\u1ea3i.<\/p>\n<p>Ngo\u00e0i ra, vi\u1ec7c so s\u00e1nh tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a c\u00e1c ch\u1ea5t c\u00f2n gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c v\u00ec sao v\u1eadt n\u00e0y n\u1ed5i c\u00f2n v\u1eadt kia ch\u00ecm trong ch\u1ea5t l\u1ecfng: v\u1eadt c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang nh\u1ecf h\u01a1n ch\u1ea5t l\u1ecfng th\u00ec n\u1ed5i, ng\u01b0\u1ee3c l\u1ea1i th\u00ec ch\u00ecm. \u0110\u00e2y c\u0169ng l\u00e0 nguy\u00ean l\u00fd gi\u00fap k\u1ef9 s\u01b0 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u nh\u1eb9 m\u00e0 v\u1eabn b\u1ec1n cho m\u00e1y bay, t\u00e0u thuy\u1ec1n hay c\u00e1c thi\u1ebft b\u1ecb c\u1ea7m tay.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-570908\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-4.jpg\" alt=\"trong-luong-rieng-4\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-4.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-4-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/trong-luong-rieng-4-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>C\u00f4ng th\u1ee9c t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec?<\/h3>\n<p>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng d = P\/V, trong \u0111\u00f3 P l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt (N) v\u00e0 V l\u00e0 th\u1ec3 t\u00edch c\u1ee7a v\u1eadt (m\u00b3). \u0110\u01a1n v\u1ecb c\u1ee7a k\u1ebft qu\u1ea3 l\u00e0 N\/m\u00b3.<\/p>\n<h3>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang li\u00ean h\u1ec7 v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang th\u1ebf n\u00e0o?<\/h3>\n<p>Hai \u0111\u1ea1i l\u01b0\u1ee3ng li\u00ean h\u1ec7 qua c\u00f4ng th\u1ee9c d = 10 \u00d7 D (l\u1ea5y g \u2248 10 m\/s\u00b2), v\u00ec tr\u1ecdng l\u01b0\u1ee3ng P = 10 \u00d7 m \u1edf g\u1ea7n m\u1eb7t \u0111\u1ea5t. N\u1ebfu d\u00f9ng g = 9,8 m\/s\u00b2 th\u00ec d = 9,8 \u00d7 D.<\/p>\n<h3>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u01b0\u1edbc l\u00e0 bao nhi\u00eau?<\/h3>\n<p>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u01b0\u1edbc kho\u1ea3ng 10.000 N\/m\u00b3, t\u01b0\u01a1ng \u1ee9ng v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 1.000 kg\/m\u00b3.<\/p>\n<h3>\u0110\u01a1n v\u1ecb c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec?<\/h3>\n<p>\u0110\u01a1n v\u1ecb c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 niut\u01a1n tr\u00ean m\u00e9t kh\u1ed1i, vi\u1ebft t\u1eaft l\u00e0 N\/m\u00b3.<\/p>\n<h3>Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang kh\u00e1c nhau \u1edf \u0111i\u1ec3m n\u00e0o?<\/h3>\n<p>Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang \u0111o b\u1eb1ng kg\/m\u00b3 v\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u1ecb tr\u00ed, c\u00f2n tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang \u0111o b\u1eb1ng N\/m\u00b3 v\u00e0 ph\u1ee5 thu\u1ed9c gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng g. Ch\u00fang li\u00ean h\u1ec7 qua d = 10D.<\/p>\n<h3>L\u00e0m sao t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng khi bi\u1ebft tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang?<\/h3>\n<p>B\u1ea1n d\u00f9ng c\u00f4ng th\u1ee9c bi\u1ebfn \u0111\u1ed5i P = d \u00d7 V, t\u1ee9c l\u00e0 l\u1ea5y tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang nh\u00e2n v\u1edbi th\u1ec3 t\u00edch c\u1ee7a v\u1eadt.<\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>T\u00f3m l\u1ea1i, <strong>tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang d = P\/V \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng N\/m\u00b3 v\u00e0 li\u00ean h\u1ec7 v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang qua c\u00f4ng th\u1ee9c d = 10D<\/strong>. Ghi nh\u1edb c\u00f4ng th\u1ee9c c\u00f9ng b\u1ea3ng tra c\u1ee9u s\u1ebd gi\u00fap b\u1ea1n gi\u1ea3i nhanh c\u00e1c b\u00e0i to\u00e1n V\u1eadt l\u00fd v\u00e0 \u01b0\u1edbc l\u01b0\u1ee3ng t\u1ea3i tr\u1ecdng trong th\u1ef1c t\u1ebf. \u0110\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n ph\u1ea7n c\u01a1 h\u1ecdc, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o th\u00eam b\u00e0i <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/gia-toc-trong-truong-la-gi\/\">gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng l\u00e0 g\u00ec<\/a> v\u00e0 b\u00e0i <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/luc-hap-dan-la-gi\/\">l\u1ef1c h\u1ea5p d\u1eabn l\u00e0 g\u00ec<\/a> tr\u00ean chuy\u00ean m\u1ee5c tin t\u1ee9c c\u1ee7a Ho\u00e0ng H\u00e0 Mobile.<\/p>\n<p>Xem th\u00eam:<\/p>\n<p><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/vi-khuan-la-gi\/\">Vi khu\u1ea9n l\u00e0 g\u00ec? C\u1ea5u t\u1ea1o, h\u00ecnh d\u1ea1ng v\u00e0 vai tr\u00f2<\/a><\/p>\n<p><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/phan-ung-oxi-hoa-khu-la-gi\/\">Ph\u1ea3n \u1ee9ng oxi h\u00f3a kh\u1eed l\u00e0 g\u00ec? Ch\u1ea5t kh\u1eed, ch\u1ea5t oxi h\u00f3a v\u00e0 c\u00e1ch c\u00e2n b\u1eb1ng<\/a><br \/>\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\":\"Question\",\"name\":\"C\u00f4ng th\u1ee9c t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng d = P\/V, trong \u0111\u00f3 P l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt (N) v\u00e0 V l\u00e0 th\u1ec3 t\u00edch c\u1ee7a v\u1eadt (m\u00b3). \u0110\u01a1n v\u1ecb c\u1ee7a k\u1ebft qu\u1ea3 l\u00e0 N\/m\u00b3.\"}},\n    {\"@type\":\"Question\",\"name\":\"Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang li\u00ean h\u1ec7 v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang th\u1ebf n\u00e0o?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Hai \u0111\u1ea1i l\u01b0\u1ee3ng li\u00ean h\u1ec7 qua c\u00f4ng th\u1ee9c d = 10 \u00d7 D (l\u1ea5y g \u2248 10 m\/s\u00b2), v\u00ec tr\u1ecdng l\u01b0\u1ee3ng P = 10 \u00d7 m \u1edf g\u1ea7n m\u1eb7t \u0111\u1ea5t. N\u1ebfu d\u00f9ng g = 9,8 m\/s\u00b2 th\u00ec d = 9,8 \u00d7 D.\"}},\n    {\"@type\":\"Question\",\"name\":\"Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u01b0\u1edbc l\u00e0 bao nhi\u00eau?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u01b0\u1edbc kho\u1ea3ng 10.000 N\/m\u00b3, t\u01b0\u01a1ng \u1ee9ng v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 1.000 kg\/m\u00b3.\"}},\n    {\"@type\":\"Question\",\"name\":\"\u0110\u01a1n v\u1ecb c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"\u0110\u01a1n v\u1ecb c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 niut\u01a1n tr\u00ean m\u00e9t kh\u1ed1i, vi\u1ebft t\u1eaft l\u00e0 N\/m\u00b3.\"}},\n    {\"@type\":\"Question\",\"name\":\"Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang kh\u00e1c nhau \u1edf \u0111i\u1ec3m n\u00e0o?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang \u0111o b\u1eb1ng kg\/m\u00b3 v\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u1ecb tr\u00ed, c\u00f2n tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang \u0111o b\u1eb1ng N\/m\u00b3 v\u00e0 ph\u1ee5 thu\u1ed9c gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng g. 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C\u00f4ng th\u1ee9c d = P\/V v\u00e0 b\u1ea3ng tra c\u1ee9u","_yoast_wpseo_metadesc":"Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c d = P\/V, \u0111\u01a1n v\u1ecb N\/m\u00b3, li\u00ean h\u1ec7 d = 10D, b\u1ea3ng tra c\u1ee9u v\u00e0 b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i chi ti\u1ebft d\u1ec5 hi\u1ec3u.","footnotes":""},"categories":[3910,30453],"tags":[],"class_list":["post-570906","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","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\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c d = P\/V v\u00e0 b\u1ea3ng tra c\u1ee9u<\/title>\n<meta name=\"description\" content=\"Tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang l\u00e0 g\u00ec? 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