{"id":570158,"date":"2026-07-27T14:35:22","date_gmt":"2026-07-27T07:35:22","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=570158"},"modified":"2026-07-27T15:08:31","modified_gmt":"2026-07-27T08:08:31","slug":"tan-so-goc-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/tan-so-goc-la-gi\/","title":{"rendered":"T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c \u03c9 = 2\u03c0\/T v\u00e0 b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng"},"content":{"rendered":"<p><strong>T\u1ea7n s\u1ed1 g\u00f3c (k\u00fd hi\u1ec7u \u03c9, \u0111\u1ecdc l\u00e0 \u00f4-m\u00ea-ga) l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng cho t\u1ed1c \u0111\u1ed9 bi\u1ebfn thi\u00ean pha c\u1ee7a dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a ho\u1eb7c t\u1ed1c \u0111\u1ed9 quay trong chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u, \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng \u03c9 = 2\u03c0\/T = 2\u03c0f.<\/strong> \u0110\u01a1n v\u1ecb c\u1ee7a t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 radian tr\u00ean gi\u00e2y (rad\/s). \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng n\u1ec1n t\u1ea3ng c\u1ee7a ph\u1ea7n dao \u0111\u1ed9ng c\u01a1 v\u00e0 \u0111i\u1ec7n xoay chi\u1ec1u trong ch\u01b0\u01a1ng tr\u00ecnh V\u1eadt l\u00fd l\u1edbp 11 v\u00e0 12. Trong b\u00e0i d\u01b0\u1edbi \u0111\u00e2y, b\u1ea1n s\u1ebd hi\u1ec3u r\u00f5 t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec, c\u00f4ng th\u1ee9c t\u00ednh, c\u00e1ch ph\u00e2n bi\u1ec7t v\u1edbi t\u1ea7n s\u1ed1 th\u01b0\u1eddng, c\u00f4ng th\u1ee9c ri\u00eang cho con l\u1eafc v\u00e0 m\u1ed9t lo\u1ea1t b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i chi ti\u1ebft \u0111\u1ec3 t\u1ef1 luy\u1ec7n.<\/p>\n<h2>T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec?<\/h2>\n<p>T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng cho bi\u1ebft pha c\u1ee7a dao \u0111\u1ed9ng bi\u1ebfn thi\u00ean nhanh hay ch\u1eadm theo th\u1eddi gian. N\u00f3i ng\u1eafn g\u1ecdn, \u03c9 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi: trong m\u1ed9t gi\u00e2y, pha dao \u0111\u1ed9ng thay \u0111\u1ed5i bao nhi\u00eau radian?<\/p>\n<ul>\n<li>Trong chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u, t\u1ea7n s\u1ed1 g\u00f3c ch\u00ednh l\u00e0 g\u00f3c (t\u00ednh b\u1eb1ng radian) m\u00e0 b\u00e1n k\u00ednh qu\u00e9t \u0111\u01b0\u1ee3c trong m\u1ed9t \u0111\u01a1n v\u1ecb th\u1eddi gian.<\/li>\n<li>Trong dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a, t\u1ea7n s\u1ed1 g\u00f3c xu\u1ea5t hi\u1ec7n trong ph\u01b0\u01a1ng tr\u00ecnh li \u0111\u1ed9 x = A\u00b7cos(\u03c9t + \u03c6) v\u00e0 quy\u1ebft \u0111\u1ecbnh v\u1eadt dao \u0111\u1ed9ng nhanh hay ch\u1eadm.<\/li>\n<\/ul>\n<p>V\u00ec \u0111o b\u1eb1ng radian n\u00ean t\u1ea7n s\u1ed1 g\u00f3c c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 &#8220;t\u1ed1c \u0111\u1ed9 g\u00f3c&#8221; khi n\u00f3i v\u1ec1 chuy\u1ec3n \u0111\u1ed9ng quay. Hai kh\u00e1i ni\u1ec7m n\u00e0y c\u00f3 c\u00f9ng c\u00f4ng th\u1ee9c v\u00e0 c\u00f9ng \u0111\u01a1n v\u1ecb rad\/s.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-570189\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-1.jpg\" alt=\"tan-so-goc-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>C\u00f4ng th\u1ee9c t\u00ednh t\u1ea7n s\u1ed1 g\u00f3c<\/h2>\n<p>T\u1ea7n s\u1ed1 g\u00f3c li\u00ean h\u1ec7 tr\u1ef1c ti\u1ebfp v\u1edbi chu k\u1ef3 T v\u00e0 t\u1ea7n s\u1ed1 f qua c\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n sau:<\/p>\n<p><strong>\u03c9 = 2\u03c0 \/ T = 2\u03c0 \u00b7 f<\/strong><\/p>\n<p>Trong \u0111\u00f3 \u00fd ngh\u0129a t\u1eebng k\u00fd hi\u1ec7u nh\u01b0 sau:<\/p>\n<ul>\n<li>\u03c9: t\u1ea7n s\u1ed1 g\u00f3c, \u0111\u01a1n v\u1ecb radian tr\u00ean gi\u00e2y (rad\/s).<\/li>\n<li>T: chu k\u1ef3 dao \u0111\u1ed9ng, t\u1ee9c th\u1eddi gian v\u1eadt th\u1ef1c hi\u1ec7n m\u1ed9t dao \u0111\u1ed9ng to\u00e0n ph\u1ea7n, \u0111\u01a1n v\u1ecb gi\u00e2y (s).<\/li>\n<li>f: t\u1ea7n s\u1ed1 dao \u0111\u1ed9ng, t\u1ee9c s\u1ed1 dao \u0111\u1ed9ng trong m\u1ed9t gi\u00e2y, \u0111\u01a1n v\u1ecb h\u00e9c (Hz), v\u1edbi f = 1\/T.<\/li>\n<\/ul>\n<p>T\u1eeb c\u00f4ng th\u1ee9c g\u1ed1c, b\u1ea1n d\u1ec5 d\u00e0ng suy ra hai c\u00f4ng th\u1ee9c \u0111\u1ea3o: T = 2\u03c0\/\u03c9 v\u00e0 f = \u03c9\/(2\u03c0). B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y t\u00f3m t\u1eaft ba \u0111\u1ea1i l\u01b0\u1ee3ng li\u00ean quan \u0111\u1ec3 b\u1ea1n tra nhanh khi l\u00e0m b\u00e0i:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0110\u1ea1i l\u01b0\u1ee3ng<\/th>\n<th>K\u00fd hi\u1ec7u<\/th>\n<th>\u0110\u01a1n v\u1ecb<\/th>\n<th>C\u00f4ng th\u1ee9c li\u00ean h\u1ec7<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Chu k\u1ef3<\/td>\n<td>T<\/td>\n<td>gi\u00e2y (s)<\/td>\n<td>T = 2\u03c0\/\u03c9 = 1\/f<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea7n s\u1ed1<\/td>\n<td>f<\/td>\n<td>h\u00e9c (Hz)<\/td>\n<td>f = 1\/T = \u03c9\/(2\u03c0)<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea7n s\u1ed1 g\u00f3c<\/td>\n<td>\u03c9<\/td>\n<td>rad\/s<\/td>\n<td>\u03c9 = 2\u03c0\/T = 2\u03c0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Ba \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0y g\u1eafn b\u00f3 ch\u1eb7t ch\u1ebd: ch\u1ec9 c\u1ea7n bi\u1ebft m\u1ed9t trong ba, b\u1ea1n t\u00ednh \u0111\u01b0\u1ee3c hai \u0111\u1ea1i l\u01b0\u1ee3ng c\u00f2n l\u1ea1i.<\/p>\n<h2>Ph\u00e2n bi\u1ec7t t\u1ea7n s\u1ed1 v\u00e0 t\u1ea7n s\u1ed1 g\u00f3c<\/h2>\n<p>\u0110\u00e2y l\u00e0 hai \u0111\u1ea1i l\u01b0\u1ee3ng r\u1ea5t d\u1ec5 nh\u1ea7m l\u1eabn nh\u01b0ng b\u1ea3n ch\u1ea5t kh\u00e1c nhau. \u0110i\u1ec3m m\u1ea5u ch\u1ed1t n\u1eb1m \u1edf \u0111\u01a1n v\u1ecb v\u00e0 \u00fd ngh\u0129a.<\/p>\n<ul>\n<li><strong>T\u1ea7n s\u1ed1 f<\/strong> cho bi\u1ebft s\u1ed1 dao \u0111\u1ed9ng (s\u1ed1 chu k\u1ef3) th\u1ef1c hi\u1ec7n trong m\u1ed9t gi\u00e2y, \u0111\u01a1n v\u1ecb h\u00e9c (Hz).<\/li>\n<li><strong>T\u1ea7n s\u1ed1 g\u00f3c \u03c9<\/strong> cho bi\u1ebft pha bi\u1ebfn thi\u00ean bao nhi\u00eau radian trong m\u1ed9t gi\u00e2y, \u0111\u01a1n v\u1ecb rad\/s.<\/li>\n<\/ul>\n<p>M\u1ed1i li\u00ean h\u1ec7 gi\u1eefa ch\u00fang l\u00e0 \u03c9 = 2\u03c0f, ngh\u0129a l\u00e0 t\u1ea7n s\u1ed1 g\u00f3c lu\u00f4n l\u1edbn h\u01a1n t\u1ea7n s\u1ed1 kho\u1ea3ng 6,28 l\u1ea7n (b\u1eb1ng 2\u03c0). V\u00ed d\u1ee5, d\u00f2ng \u0111i\u1ec7n l\u01b0\u1edbi \u1edf Vi\u1ec7t Nam c\u00f3 t\u1ea7n s\u1ed1 f = 50 Hz th\u00ec t\u1ea7n s\u1ed1 g\u00f3c t\u01b0\u01a1ng \u1ee9ng l\u00e0 \u03c9 = 2\u03c0 \u00d7 50 \u2248 314 rad\/s. B\u1ea1n c\u00f3 th\u1ec3 t\u00ecm hi\u1ec3u th\u00eam \u1ee9ng d\u1ee5ng c\u1ee7a \u0111\u1ea1i l\u01b0\u1ee3ng n\u00e0y trong b\u00e0i <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/dong-dien-xoay-chieu-la-gi\/\">d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u l\u00e0 g\u00ec<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-570194\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-2.jpg\" alt=\"tan-so-goc-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>T\u1ea7n s\u1ed1 g\u00f3c c\u1ee7a con l\u1eafc l\u00f2 xo v\u00e0 con l\u1eafc \u0111\u01a1n<\/h2>\n<p>V\u1edbi hai h\u1ec7 dao \u0111\u1ed9ng c\u01a1 quen thu\u1ed9c, t\u1ea7n s\u1ed1 g\u00f3c c\u00f2n \u0111\u01b0\u1ee3c t\u00ednh tr\u1ef1c ti\u1ebfp t\u1eeb \u0111\u1eb7c tr\u01b0ng c\u1ee7a h\u1ec7 m\u00e0 kh\u00f4ng c\u1ea7n bi\u1ebft tr\u01b0\u1edbc chu k\u1ef3. B\u1ea3ng sau t\u1ed5ng h\u1ee3p c\u00f4ng th\u1ee9c:<\/p>\n<table>\n<thead>\n<tr>\n<th>H\u1ec7 dao \u0111\u1ed9ng<\/th>\n<th>C\u00f4ng th\u1ee9c \u03c9<\/th>\n<th>\u00dd ngh\u0129a k\u00fd hi\u1ec7u<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Con l\u1eafc l\u00f2 xo<\/td>\n<td>\u03c9 = \u221a(k\/m)<\/td>\n<td>k l\u00e0 \u0111\u1ed9 c\u1ee9ng l\u00f2 xo (N\/m), m l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt (kg)<\/td>\n<\/tr>\n<tr>\n<td>Con l\u1eafc \u0111\u01a1n<\/td>\n<td>\u03c9 = \u221a(g\/l)<\/td>\n<td>g l\u00e0 <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/gia-toc-trong-truong-la-gi\/\">gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng<\/a> (m\/s\u00b2), l l\u00e0 chi\u1ec1u d\u00e0i d\u00e2y (m)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>T\u1eeb \u03c9, b\u1ea1n suy ra ngay chu k\u1ef3 c\u1ee7a t\u1eebng lo\u1ea1i con l\u1eafc: con l\u1eafc l\u00f2 xo c\u00f3 T = 2\u03c0\u221a(m\/k), <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/con-lac-don-la-gi\/\">con l\u1eafc \u0111\u01a1n<\/a> c\u00f3 T = 2\u03c0\u221a(l\/g). Nh\u1edd v\u1eady, \u0111\u1ec1 b\u00e0i ch\u1ec9 c\u1ea7n cho k, m ho\u1eb7c g, l l\u00e0 \u0111\u1ee7 \u0111\u1ec3 t\u00ednh m\u1ecdi \u0111\u1ea1i l\u01b0\u1ee3ng c\u00f2n l\u1ea1i.<\/p>\n<h2>\u00dd ngh\u0129a c\u1ee7a t\u1ea7n s\u1ed1 g\u00f3c trong dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a<\/h2>\n<p>Trong ph\u01b0\u01a1ng tr\u00ecnh dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a x = A\u00b7cos(\u03c9t + \u03c6), t\u1ea7n s\u1ed1 g\u00f3c \u03c9 quy\u1ebft \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 dao \u0111\u1ed9ng: \u03c9 c\u00e0ng l\u1edbn th\u00ec chu k\u1ef3 c\u00e0ng nh\u1ecf v\u00e0 v\u1eadt dao \u0111\u1ed9ng c\u00e0ng nhanh. Ngo\u00e0i ra, \u03c9 c\u00f2n xu\u1ea5t hi\u1ec7n trong h\u00e0ng lo\u1ea1t c\u00f4ng th\u1ee9c quan tr\u1ecdng:<\/p>\n<ul>\n<li>V\u1eadn t\u1ed1c c\u1ef1c \u0111\u1ea1i: v<sub>max<\/sub> = \u03c9A.<\/li>\n<li>Gia t\u1ed1c c\u1ef1c \u0111\u1ea1i: a<sub>max<\/sub> = \u03c9\u00b2A.<\/li>\n<li>H\u1ec7 th\u1ee9c \u0111\u1ed9c l\u1eadp v\u1edbi th\u1eddi gian: A\u00b2 = x\u00b2 + v\u00b2\/\u03c9\u00b2.<\/li>\n<\/ul>\n<p>Ch\u00ednh v\u00ec c\u00f3 m\u1eb7t trong g\u1ea7n nh\u01b0 m\u1ecdi c\u00f4ng th\u1ee9c c\u1ee7a dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a, vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u00fang \u03c9 th\u01b0\u1eddng l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean khi gi\u1ea3i m\u1ed9t b\u00e0i to\u00e1n. B\u1ea1n c\u00f3 th\u1ec3 \u00f4n l\u1ea1i to\u00e0n b\u1ed9 d\u1ea1ng b\u00e0i trong b\u00e0i <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/dao-dong-dieu-hoa-la-gi\/\">dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a l\u00e0 g\u00ec<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-570191\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-4.jpg\" alt=\"tan-so-goc-4\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-4.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-4-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-4-768x432.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>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c b\u00e0i t\u1eadp \u0111i\u1ec3n h\u00ecnh, \u0111i t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao, \u0111\u1ec3 b\u1ea1n luy\u1ec7n c\u00e1ch \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c t\u1ea7n s\u1ed1 g\u00f3c.<\/p>\n<ul>\n<li><strong>B\u00e0i 1:<\/strong> M\u1ed9t v\u1eadt dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a v\u1edbi chu k\u1ef3 T = 0,5 s. T\u00ednh t\u1ea7n s\u1ed1 g\u00f3c \u03c9. <em>L\u1eddi gi\u1ea3i:<\/em> \u00c1p d\u1ee5ng \u03c9 = 2\u03c0\/T = 2 \u00d7 3,14 \/ 0,5 \u2248 12,56 rad\/s.<\/li>\n<li><strong>B\u00e0i 2:<\/strong> M\u1ed9t dao \u0111\u1ed9ng c\u00f3 t\u1ea7n s\u1ed1 f = 5 Hz. T\u00ednh \u03c9. <em>L\u1eddi gi\u1ea3i:<\/em> \u00c1p d\u1ee5ng \u03c9 = 2\u03c0f = 2 \u00d7 3,14 \u00d7 5 = 31,4 rad\/s.<\/li>\n<li><strong>B\u00e0i 3:<\/strong> Con l\u1eafc l\u00f2 xo c\u00f3 \u0111\u1ed9 c\u1ee9ng k = 100 N\/m, kh\u1ed1i l\u01b0\u1ee3ng m = 1 kg. T\u00ednh \u03c9. <em>L\u1eddi gi\u1ea3i:<\/em> \u03c9 = \u221a(k\/m) = \u221a(100\/1) = \u221a100 = 10 rad\/s.<\/li>\n<li><strong>B\u00e0i 4:<\/strong> V\u1eadt dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a v\u1edbi \u03c9 = 10 rad\/s, bi\u00ean \u0111\u1ed9 A = 5 cm. T\u00ednh v\u1eadn t\u1ed1c c\u1ef1c \u0111\u1ea1i. <em>L\u1eddi gi\u1ea3i:<\/em> v<sub>max<\/sub> = \u03c9A = 10 \u00d7 5 = 50 cm\/s = 0,5 m\/s.<\/li>\n<li><strong>B\u00e0i 5:<\/strong> Con l\u1eafc \u0111\u01a1n d\u00e0i l = 1 m t\u1ea1i n\u01a1i c\u00f3 g = 10 m\/s\u00b2. T\u00ednh \u03c9 v\u00e0 chu k\u1ef3 T. <em>L\u1eddi gi\u1ea3i:<\/em> \u03c9 = \u221a(g\/l) = \u221a(10\/1) \u2248 3,16 rad\/s; T = 2\u03c0\/\u03c9 \u2248 1,99 s.<\/li>\n<li><strong>B\u00e0i 6 (tr\u1eafc nghi\u1ec7m):<\/strong> \u0110\u01a1n v\u1ecb c\u1ee7a t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec? A. Hz  B. s  C. rad\/s  D. m\/s. <em>\u0110\u00e1p \u00e1n:<\/em> C. rad\/s.<\/li>\n<\/ul>\n<p><strong>B\u00e0i t\u1eadp t\u1ef1 luy\u1ec7n:<\/strong> M\u1ed9t v\u1eadt dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a c\u00f3 t\u1ea7n s\u1ed1 f = 2 Hz, bi\u00ean \u0111\u1ed9 A = 4 cm. H\u00e3y t\u00ednh t\u1ea7n s\u1ed1 g\u00f3c \u03c9, chu k\u1ef3 T v\u00e0 gia t\u1ed1c c\u1ef1c \u0111\u1ea1i a<sub>max<\/sub>. (G\u1ee3i \u00fd: \u03c9 = 2\u03c0f, T = 1\/f, a<sub>max<\/sub> = \u03c9\u00b2A).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-570188\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-3.jpg\" alt=\"tan-so-goc-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/07\/tan-so-goc-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec?<\/h3>\n<p>T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng cho t\u1ed1c \u0111\u1ed9 bi\u1ebfn thi\u00ean pha c\u1ee7a dao \u0111\u1ed9ng, k\u00fd hi\u1ec7u l\u00e0 \u03c9 v\u00e0 c\u00f3 \u0111\u01a1n v\u1ecb radian tr\u00ean gi\u00e2y (rad\/s).<\/p>\n<h3>C\u00f4ng th\u1ee9c t\u00ednh t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec?<\/h3>\n<p>C\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n l\u00e0 \u03c9 = 2\u03c0\/T = 2\u03c0f, trong \u0111\u00f3 T l\u00e0 chu k\u1ef3 v\u00e0 f l\u00e0 t\u1ea7n s\u1ed1 c\u1ee7a dao \u0111\u1ed9ng.<\/p>\n<h3>T\u1ea7n s\u1ed1 g\u00f3c kh\u00e1c t\u1ea7n s\u1ed1 nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n<p>T\u1ea7n s\u1ed1 f \u0111o b\u1eb1ng Hz (s\u1ed1 dao \u0111\u1ed9ng m\u1ed7i gi\u00e2y), c\u00f2n t\u1ea7n s\u1ed1 g\u00f3c \u03c9 \u0111o b\u1eb1ng rad\/s (pha bi\u1ebfn thi\u00ean m\u1ed7i gi\u00e2y), v\u1edbi m\u1ed1i li\u00ean h\u1ec7 \u03c9 = 2\u03c0f.<\/p>\n<h3>T\u1ea7n s\u1ed1 g\u00f3c c\u1ee7a con l\u1eafc \u0111\u01a1n t\u00ednh th\u1ebf n\u00e0o?<\/h3>\n<p>Con l\u1eafc \u0111\u01a1n c\u00f3 t\u1ea7n s\u1ed1 g\u00f3c \u03c9 = \u221a(g\/l), v\u1edbi g l\u00e0 gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng v\u00e0 l l\u00e0 chi\u1ec1u d\u00e0i d\u00e2y treo.<\/p>\n<h3>\u0110\u01a1n v\u1ecb c\u1ee7a t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec?<\/h3>\n<p>\u0110\u01a1n v\u1ecb c\u1ee7a t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 radian tr\u00ean gi\u00e2y, vi\u1ebft t\u1eaft l\u00e0 rad\/s.<\/p>\n<h3>T\u1ea7n s\u1ed1 g\u00f3c c\u00f3 ph\u1ea3i l\u00e0 t\u1ed1c \u0111\u1ed9 g\u00f3c kh\u00f4ng?<\/h3>\n<p>V\u1ec1 c\u00f4ng th\u1ee9c v\u00e0 \u0111\u01a1n v\u1ecb, t\u1ea7n s\u1ed1 g\u00f3c v\u00e0 t\u1ed1c \u0111\u1ed9 g\u00f3c tr\u00f9ng nhau (\u0111\u1ec1u l\u00e0 \u03c9, \u0111\u01a1n v\u1ecb rad\/s); t\u1ed1c \u0111\u1ed9 g\u00f3c th\u01b0\u1eddng d\u00f9ng cho chuy\u1ec3n \u0111\u1ed9ng quay, c\u00f2n t\u1ea7n s\u1ed1 g\u00f3c d\u00f9ng cho dao \u0111\u1ed9ng.<\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>T\u00f3m l\u1ea1i, <strong>t\u1ea7n s\u1ed1 g\u00f3c \u03c9 = 2\u03c0\/T = 2\u03c0f, \u0111o b\u1eb1ng rad\/s, quy\u1ebft \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 dao \u0111\u1ed9ng v\u00e0 xu\u1ea5t hi\u1ec7n trong c\u00e1c c\u00f4ng th\u1ee9c v<sub>max<\/sub> = \u03c9A, a<sub>max<\/sub> = \u03c9\u00b2A<\/strong>. N\u1eafm v\u1eefng t\u1ea7n s\u1ed1 g\u00f3c gi\u00fap b\u1ea1n gi\u1ea3i nhanh h\u1ea7u h\u1ebft b\u00e0i to\u00e1n dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a v\u00e0 \u0111i\u1ec7n xoay chi\u1ec1u. \u0110\u1ec3 h\u1ecdc th\u00eam c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng V\u1eadt l\u00fd li\u00ean quan, m\u1eddi b\u1ea1n tham kh\u1ea3o b\u00e0i <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/dien-tro-suat-la-gi\/\">\u0111i\u1ec7n tr\u1edf su\u1ea5t 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<ul>\n<li><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/luc-ma-sat\/\">L\u1ef1c ma s\u00e1t l\u00e0 g\u00ec? C\u00e1c lo\u1ea1i, c\u00f4ng th\u1ee9c v\u00e0 b\u00e0i t\u1eadp<\/a><\/li>\n<li><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/so-thuc\/\">S\u1ed1 th\u1ef1c l\u00e0 g\u00ec? Ph\u00e2n lo\u1ea1i, c\u00e1ch bi\u1ec3u di\u1ec5n v\u00e0 b\u00e0i t\u1eadp<\/a><\/li>\n<li><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/song-am-la-gi\/\">S\u00f3ng \u00e2m l\u00e0 g\u00ec? M\u00f4i tr\u01b0\u1eddng truy\u1ec1n, t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1eb7c tr\u01b0ng c\u1ee7a \u00e2m<\/a><\/li>\n<\/ul>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng cho t\u1ed1c \u0111\u1ed9 bi\u1ebfn thi\u00ean pha c\u1ee7a dao \u0111\u1ed9ng, k\u00fd hi\u1ec7u l\u00e0 \u03c9 v\u00e0 c\u00f3 \u0111\u01a1n v\u1ecb radian tr\u00ean gi\u00e2y (rad\/s).\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u00f4ng th\u1ee9c t\u00ednh t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"C\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n l\u00e0 \u03c9 = 2\u03c0\/T = 2\u03c0f, trong \u0111\u00f3 T l\u00e0 chu k\u1ef3 v\u00e0 f l\u00e0 t\u1ea7n s\u1ed1 c\u1ee7a dao \u0111\u1ed9ng.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"T\u1ea7n s\u1ed1 g\u00f3c kh\u00e1c t\u1ea7n s\u1ed1 nh\u01b0 th\u1ebf n\u00e0o?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"T\u1ea7n s\u1ed1 f \u0111o b\u1eb1ng Hz (s\u1ed1 dao \u0111\u1ed9ng m\u1ed7i gi\u00e2y), c\u00f2n t\u1ea7n s\u1ed1 g\u00f3c \u03c9 \u0111o b\u1eb1ng rad\/s (pha bi\u1ebfn thi\u00ean m\u1ed7i gi\u00e2y), v\u1edbi m\u1ed1i li\u00ean h\u1ec7 \u03c9 = 2\u03c0f.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"T\u1ea7n s\u1ed1 g\u00f3c c\u1ee7a con l\u1eafc \u0111\u01a1n t\u00ednh th\u1ebf n\u00e0o?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Con l\u1eafc \u0111\u01a1n c\u00f3 t\u1ea7n s\u1ed1 g\u00f3c \u03c9 = \u221a(g\/l), v\u1edbi g l\u00e0 gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng v\u00e0 l l\u00e0 chi\u1ec1u d\u00e0i d\u00e2y treo.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u0110\u01a1n v\u1ecb c\u1ee7a t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u0110\u01a1n v\u1ecb c\u1ee7a t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 radian tr\u00ean gi\u00e2y, vi\u1ebft t\u1eaft l\u00e0 rad\/s.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"T\u1ea7n s\u1ed1 g\u00f3c c\u00f3 ph\u1ea3i l\u00e0 t\u1ed1c \u0111\u1ed9 g\u00f3c kh\u00f4ng?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"V\u1ec1 c\u00f4ng th\u1ee9c v\u00e0 \u0111\u01a1n v\u1ecb, t\u1ea7n s\u1ed1 g\u00f3c v\u00e0 t\u1ed1c \u0111\u1ed9 g\u00f3c tr\u00f9ng nhau (\u0111\u1ec1u l\u00e0 \u03c9, \u0111\u01a1n v\u1ecb rad\/s); t\u1ed1c \u0111\u1ed9 g\u00f3c th\u01b0\u1eddng d\u00f9ng cho chuy\u1ec3n \u0111\u1ed9ng quay, c\u00f2n t\u1ea7n s\u1ed1 g\u00f3c d\u00f9ng cho dao \u0111\u1ed9ng.\"\n      }\n    }\n  ]\n}\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ea7n s\u1ed1 g\u00f3c (k\u00fd hi\u1ec7u \u03c9, \u0111\u1ecdc l\u00e0 \u00f4-m\u00ea-ga) l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng cho t\u1ed1c \u0111\u1ed9 bi\u1ebfn thi\u00ean pha c\u1ee7a dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a ho\u1eb7c t\u1ed1c \u0111\u1ed9 quay trong chuy\u1ec3n \u0111\u1ed9ng tr\u00f2n \u0111\u1ec1u, \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng \u03c9 = 2\u03c0\/T = 2\u03c0f. \u0110\u01a1n v\u1ecb c\u1ee7a t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 radian tr\u00ean gi\u00e2y (rad\/s). \u0110\u00e2y l\u00e0 [&hellip;]<\/p>\n","protected":false},"author":102,"featured_media":570192,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"t\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec","_yoast_wpseo_title":"T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c \u03c9 = 2\u03c0\/T v\u00e0 b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng","_yoast_wpseo_metadesc":"T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec? T\u1ea7n s\u1ed1 g\u00f3c \u03c9 = 2\u03c0\/T = 2\u03c0f, \u0111\u01a1n v\u1ecb rad\/s, \u0111\u1eb7c tr\u01b0ng cho t\u1ed1c \u0111\u1ed9 dao \u0111\u1ed9ng. Xem c\u00f4ng th\u1ee9c, v\u00ed d\u1ee5 c\u00f3 l\u1eddi gi\u1ea3i v\u00e0 b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng chi ti\u1ebft.","footnotes":""},"categories":[3910,30453],"tags":[],"class_list":["post-570158","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>T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c \u03c9 = 2\u03c0\/T v\u00e0 b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng<\/title>\n<meta name=\"description\" content=\"T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec? T\u1ea7n s\u1ed1 g\u00f3c \u03c9 = 2\u03c0\/T = 2\u03c0f, \u0111\u01a1n v\u1ecb rad\/s, \u0111\u1eb7c tr\u01b0ng cho t\u1ed1c \u0111\u1ed9 dao \u0111\u1ed9ng. Xem c\u00f4ng th\u1ee9c, v\u00ed d\u1ee5 c\u00f3 l\u1eddi gi\u1ea3i v\u00e0 b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng chi ti\u1ebft.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hoanghamobile.com\/tin-tuc\/tan-so-goc-la-gi\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c \u03c9 = 2\u03c0\/T v\u00e0 b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng\" \/>\n<meta property=\"og:description\" content=\"T\u1ea7n s\u1ed1 g\u00f3c l\u00e0 g\u00ec? T\u1ea7n s\u1ed1 g\u00f3c \u03c9 = 2\u03c0\/T = 2\u03c0f, \u0111\u01a1n v\u1ecb rad\/s, \u0111\u1eb7c tr\u01b0ng cho t\u1ed1c \u0111\u1ed9 dao \u0111\u1ed9ng. 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