{"id":3424,"date":"2021-10-20T17:09:27","date_gmt":"2021-10-20T10:09:27","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=3424"},"modified":"2021-10-22T18:08:39","modified_gmt":"2021-10-22T11:08:39","slug":"the-nang-la-gi-cong-thuc-tinh-the-nang-dan-hoi-trong-truong","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/the-nang-la-gi-cong-thuc-tinh-the-nang-dan-hoi-trong-truong\/","title":{"rendered":"Th\u1ebf n\u0103ng l\u00e0 g\u00ec, c\u00f4ng th\u1ee9c t\u00ednh th\u1ebf n\u0103ng \u0111\u00e0n h\u1ed3i, tr\u1ecdng tr\u01b0\u1eddng"},"content":{"rendered":"\n<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n<p>Th\u1ebf n\u0103ng l\u00e0 m\u1ed9t trong nh\u1eefng ch\u01b0\u01a1ng tr\u00ecnh h\u1ecdc quan tr\u1ecdng c\u1ee7a v\u1eadt l\u00fd 10. \u0110\u1ec3 c\u00f3 th\u1ec3 gi\u1ea3i h\u1ebft c\u00e1c b\u00e0i t\u1eadp v\u1ec1 th\u1ebf n\u0103ng \u0111\u00f2i h\u1ecfi <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a> ph\u1ea3i n\u1eafm ch\u1eafc ki\u1ebfn th\u1ee9c. V\u1eady th\u1ebf n\u0103ng l\u00e0 g\u00ec? C\u00f4ng n\u0103ng l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c nh\u01b0 th\u1ebf n\u00e0o? H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y c\u1ee7a Vietlearn.org nh\u00e9!<\/p>\n\n\n\n<p>Th\u1ebf n\u0103ng l\u00e0 g\u00ec? Kh\u00e1i ni\u1ec7m li\u00ean quan<\/p>\n\n\n\n<p>L\u1ef1c \u0111\u00e0n h\u1ed3i l\u00e0 g\u00ec?<\/p>\n\n\n\n<p>Th\u1ebf n\u00e0o l\u00e0 l\u1ef1c \u0111\u00e0n h\u1ed3i ? l\u00e0 l\u1ef1c \u0111\u01b0\u1ee3c sinh ra khi v\u1eadt \u0111\u00e0n h\u1ed3i b\u1ecb bi\u1ebfn d\u1ea1ng. V\u1eadt \u0111\u00e0n h\u1ed3i v\u00f4 c\u00f9ng \u0111a d\u1ea1ng c\u00f3 th\u1ec3 l\u00e0 s\u1ee3i d\u00e2y chun, l\u00f2 xo ho\u1eb7c l\u00e0 m\u1ed9t \u0111o\u1ea1n d\u00e2y cao su. N\u1ebfu v\u1eadt \u0111\u00e0n h\u1ed3i l\u00e0 l\u00f2 xo khi l\u1ef1c t\u00e1c d\u1ee5ng l\u1ef1c s\u1ebd l\u00e0m l\u00f2 xo bi\u1ebfn d\u1ea1ng, t\u00e1c d\u1ee5ng v\u00e0o qu\u1ea3 n\u1eb7ng \u0111\u01b0\u1ee3c treo g\u1ecdi l\u00e0 l\u1ef1c \u0111\u00e0n h\u1ed3i.<\/p>\n\n\n\n<p>Gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng l\u00e0 g\u00ec?<\/p>\n\n\n\n<p>L\u00e0 gia t\u1ed1c do l\u1ef1c h\u1ea5p d\u1eabn t\u00e1c d\u1ee5ng l\u00ean v\u1eadt. Gi\u1ed1ng nh\u01b0 v\u1eadn t\u1ed1c, gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng c\u00f3 h\u01b0\u1edbng. B\u1ecf qua ma s\u00e1t do s\u1ee9c c\u1ea3n kh\u00f4ng kh\u00ed theo nguy\u00ean l\u00fd, m\u1ecdi v\u1eadt nh\u1ecf ch\u1ecbu gia t\u1ed1c trong m\u1ed9t tr\u01b0\u1eddng h\u1ea5p d\u1eabn s\u1ebd l\u00e0 nh\u01b0 nhau \u0111\u1ed1i v\u1edbi t\u00e2m c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng.<\/p>\n\n\n\n<p>Th\u1ebf n\u0103ng l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng trong v\u1eadt l\u00fd, th\u1ec3 hi\u1ec7n cho kh\u1ea3 n\u0103ng sinh c\u1ee7a v\u1eadt v\u00e0 n\u00f3 t\u1ed3n t\u1ea1i d\u01b0\u1edbi d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng. Hi\u1ec7n nay, c\u00f3 2 d\u1ea1ng th\u1ebf n\u0103ng \u0111\u00f3 ch\u00ednh l\u00e0 th\u1ebf n\u0103ng \u0111\u00e0n h\u1ed3i v\u00e0 tr\u1ecdng tr\u01b0\u1eddng. M\u1ed7i lo\u1ea1i \u0111\u1ec1u c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 c\u00f4ng th\u1ee9c t\u00ednh kh\u00e1c nhau.<\/p>\n\n\n\n<p>T\u00ecm hi\u1ec3u v\u1ec1 th\u1ebf n\u0103ng tr\u1ecdng tr\u01b0\u1eddng<\/p>\n\n\n\n<p>Tr\u1ecdng tr\u01b0\u1eddng l\u00e0 g\u00ec? Xung quanh Tr\u00e1i \u0110\u1ea5t lu\u00f4n t\u1ed3n t\u1ea1i m\u1ed9t tr\u1ecdng tr\u01b0\u1eddng. Bi\u1ec3u hi\u1ec7n c\u1ee7a tr\u1ecdng tr\u01b0\u1eddng l\u00e0 s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ea3 tr\u1ecdng l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean v\u1eadt kh\u1ed1i l\u01b0\u1ee3ng m, \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u1ea1i v\u1ecb tr\u00ed b\u1ea5t k\u1ef3 trong kho\u1ea3ng kh\u00f4ng gian c\u00f3 tr\u1ecdng tr\u01b0\u1eddng.<\/p>\n\n\n\n<p>C\u00f4ng th\u1ee9c c\u1ee7a tr\u1ecdng l\u1ef1c trong m\u1ed9t v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng m l\u00e0:<\/p>\n\n\n\n<p>Trong \u0111\u00f3:<\/p>\n\n\n\n<p>: l\u00e0 gia t\u1ed1c r\u01a1i t\u1ef1 do hay ch\u00ednh l\u00e0 gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng.<\/p>\n\n\n\n<p>m: l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt.<\/p>\n\n\n\n<p>Trong m\u1ed9t kho\u1ea3ng kh\u00f4ng gian kh\u00f4ng qu\u00e1 r\u1ed9ng n\u1ebfu gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng t\u1ea1i m\u1ecdi \u0111i\u1ec3m \u0111\u1ec1u c\u00f3 ph\u01b0\u01a1ng song song, c\u00f9ng chi\u1ec1u v\u00e0 c\u00f9ng \u0111\u1ed9 l\u1edbn th\u00ec ta n\u00f3i kho\u1ea3ng kh\u00f4ng gian \u0111\u00f3 l\u00e0 tr\u1ecdng tr\u01b0\u1eddng l\u00e0 \u0111\u1ec1u.<\/p>\n\n\n\n<p>Th\u1ebf n\u0103ng tr\u1ecdng tr\u01b0\u1eddng<\/p>\n\n\n\n<p>C\u01a1 n\u0103ng c\u1ee7a m\u1ed9t v\u1eadt s\u1ebd ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 cao c\u1ee7a v\u1eadt so v\u1edbi m\u1eb7t \u0111\u1ea5t ho\u1eb7c v\u1ecb tr\u00ed kh\u00e1c \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0m m\u1ed1c \u0111\u1ec3 t\u00ednh \u0111\u1ed9 cao \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 th\u1ebf n\u0103ng tr\u1ecdng tr\u01b0\u1eddng v\u00e0 c\u0169ng c\u00f3 th\u1ec3 g\u1ecdi l\u00e0 th\u1ebf n\u0103ng h\u1ea5p d\u1eabn. V\u00ed d\u1ee5 nh\u01b0 vi\u00ean \u0111\u1ea1n \u0111ang bay hay qu\u1ea3 m\u00edt \u1edf tr\u00ean c\u00e2y,\u2026<\/p>\n\n\n\n<p>Hi\u1ec3u \u0111\u01a1n gi\u1ea3n, th\u1ebf n\u0103ng tr\u1ecdng tr\u01b0\u1eddng l\u00e0 d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa Tr\u00e1i \u0110\u1ea5t v\u00e0 v\u1eadt; ph\u1ee5 thu\u1ed9c v\u00e0o v\u1ecb tr\u00ed c\u1ee7a v\u1eadt \u1edf trong tr\u1ecdng tr\u01b0\u1eddng. N\u1ebfu ch\u1ecdn th\u1ebf n\u0103ng c\u1ee7a v\u1eadt \u0111\u1eb7t t\u1ea1i m\u1eb7t \u0111\u1ea5t c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 m. \u0110\u1ed9 cao c\u1ee7a v\u1ecb tr\u00ed t\u01b0\u01a1ng \u1ee9ng so v\u1edbi tr\u1ecdng tr\u01b0\u1eddng tr\u00e1i \u0111\u1ea5t l\u00e0 z. Th\u00ec c\u00f4ng th\u1ee9c t\u00ednh th\u1ebf n\u0103ng tr\u1ecdng tr\u01b0\u1eddng s\u1ebd l\u00e0:<\/p>\n\n\n\n<p>Wt= m.g.z.<\/p>\n\n\n\n<p>Trong \u0111\u00f3:<\/p>\n\n\n\n<p>Wt: Th\u1ebf n\u0103ng c\u1ee7a v\u1eadt t\u1ea1i v\u1ecb tr\u00ed z, \u0111\u01a1n v\u1ecb \u0111o l\u00e0 Jun (J)<\/p>\n\n\n\n<p>m: L\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt (kg)<\/p>\n\n\n\n<p>z: L\u00e0 \u0111\u1ed9 cao c\u1ee7a v\u1eadt so v\u1edbi m\u1eb7t \u0111\u1ea5t<\/p>\n\n\n\n<p>\u0110\u1eb7c \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a th\u1ebf n\u0103ng tr\u1ecdng tr\u01b0\u1eddng \u0111\u00f3 ch\u00ednh l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng v\u00f4 h\u01b0\u1edbng, c\u00f3 th\u1ec3 r\u01a1i v\u00e0o kho\u1ea3ng t\u1eeb &gt;0=0 ho\u1eb7c &lt;0. S\u1ef1 bi\u1ebfn thi\u00ean th\u1ebf n\u0103ng v\u00e0 c\u00f4ng c\u1ee7a tr\u1ecdng l\u1ef1c ch\u00ednh l\u00e0 khi m\u1ed9t v\u1eadt b\u1eaft \u0111\u1ea7u di chuy\u1ec3n t\u1eeb v\u1ecb tr\u00ed A cho \u0111\u1ebfn B. C\u00f4ng c\u1ee7a tr\u1ecdng l\u1ef1c c\u1ee7a v\u1eadt s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf n\u0103ng c\u1ee7a tr\u1ecdng l\u1ef1c t\u1ea1i 2 v\u1ecb tr\u00ed. C\u00f4ng th\u1ee9c: AAB = Wt (\u1edf A) \u2013 Wt (\u1edf B)<\/p>\n\n\n\n<p>Trong tr\u01b0\u1eddng h\u1ee3p v\u1eadt r\u01a1i b\u1edfi l\u1ef1c h\u1ea5p d\u1eabn th\u00ec s\u1ebd l\u00e0m cho hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng th\u1ebf n\u0103ng b\u1ecb gi\u1ea3m v\u00e0 chuy\u1ec3n th\u00e0nh c\u00f4ng \u0111\u1ec3 v\u1eadt r\u1eddi m\u1ed9t c\u00e1ch t\u1ef1 do. C\u00f2n tr\u01b0\u1eddng h\u1ee3p \u0111\u01b0\u1ee3c n\u00e9m l\u00ean t\u1eeb m\u1ed1c th\u1ebf n\u0103ng s\u1ebd gi\u00fap l\u1ef1c n\u00e9m chuy\u1ec3n th\u00e0nh c\u00f4ng c\u0169ng c\u1ea3n tr\u1edf tr\u1ecdng l\u1ef1c \u0111\u1ebfn khi tr\u1ecdng l\u1ef1c gi\u00fap v\u1eadt r\u01a1i t\u1ef1 do.<\/p>\n\n\n\n<p>Li\u00ean h\u1ec7 gi\u1eefa bi\u1ebfn thi\u00ean n\u0103ng v\u00e0 c\u00f4ng c\u1ee7a tr\u1ecdng l\u1ef1c<\/p>\n\n\n\n<p>Khi m\u1ed9t v\u1eadt chuy\u1ec3n \u0111\u1ed9ng trong tr\u1ecdng tr\u01b0\u1eddng t\u1eeb M \u0111\u1ebfn N c\u00f4ng c\u1ee7a tr\u1ecdng l\u1ef1c c\u00f3 gi\u00e1 tr\u1ecb b\u1eb1ng hi\u1ec7u th\u1ebf n\u0103ng t\u1ea1i M v\u00e0 N. H\u1ec7 qu\u1ea3 l\u00e0:<\/p>\n\n\n\n<p>Khi v\u1eadt c\u00f3 \u0111\u1ed9 gi\u1ea3m cao, th\u1ebf n\u0103ng c\u1ee7a v\u1eadt gi\u1ea3m th\u00ec tr\u1ecdng l\u1ef1c s\u1ebd sinh ra c\u00f4ng d\u01b0\u01a1ng.<\/p>\n\n\n\n<p>Khi v\u1eadt t\u0103ng \u0111\u1ed9 cao, th\u1ebf n\u0103ng c\u1ee7a v\u1eadt t\u0103ng th\u00ec tr\u1ecdng l\u1ef1c s\u1ebd sinh c\u00f4ng \u00e2m.<\/p>\n\n\n\n<p>T\u00ecm hi\u1ec3u v\u1ec1 th\u1ebf n\u0103ng \u0111\u00e0n h\u1ed3i<\/p>\n\n\n\n<p>Khi m\u1ed9t v\u1eadt c\u00f3 kh\u1ea3 n\u0103ng bi\u1ebfn d\u1ea1ng do t\u00e1c \u0111\u1ed9ng n\u00e0o \u0111\u00f3 \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng sinh c\u00f4ng. \u0110\u00e2y \u0111\u01b0\u1ee3c xem nh\u01b0 m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c g\u1ecdi chung l\u00e0 th\u1ebf n\u0103ng \u0111\u00e0n h\u1ed3i. \u0110\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c th\u1ebf n\u0103ng \u0111\u00e0n h\u1ed3i tr\u01b0\u1edbc h\u1ebft m\u1ecdi ng\u01b0\u1eddi ph\u1ea3i t\u00ednh \u0111\u01b0\u1ee3c c\u00f4ng c\u1ee7a l\u1ef1c \u0111\u00e0n h\u1ed3i.<\/p>\n\n\n\n<p>X\u00e9t m\u1ed9t l\u00f2 xo c\u00f3 chi\u1ec1u l\u00e0 I0 v\u1edbi \u0111\u1ed9 co c\u1ee9ng \u0111\u00e0n h\u1ed3i \u0111\u01b0\u1ee3c k\u00ednh b\u1eb1ng k. M\u1ed9t \u0111\u1ea7u c\u1ed1 \u0111\u1ecbnh m\u1ed9t \u0111\u1ea7u g\u1eafn v\u00e0o v\u1eadt, ti\u1ebfn h\u00e0nh k\u00e9o m\u1ed9t \u0111o\u1ea1n c\u1ed1 \u0111\u1ecbnh l\u00e0 \u0394I. Khi \u0111\u00f3, l\u1ef1c \u0111\u00e0n h\u1ed3i s\u1ebd xu\u1ea5t hi\u1ec7n tr\u1ef1c ti\u1ebfp l\u00f2 xo, t\u00e1c \u0111\u1ed9ng v\u00e0o v\u1eadt. \u0110\u1ed9 d\u00e0i c\u1ee7a l\u00f2 xo s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 , l\u1ef1c \u0111\u00e0n h\u1ed3i t\u00e1c d\u1ee5ng v\u00e0o v\u1eadt theo \u0111\u1ecbnh lu\u1eadt H\u00fac s\u1ebd l\u00e0:<\/p>\n\n\n\n<p>N\u1ebfu ch\u1ecdn chi\u1ec1u d\u01b0\u01a1ng l\u00e0 chi\u1ec1u t\u0103ng c\u1ee7a l\u00f2 c\u1ee7a chi\u1ec1u d\u00e0i l\u00f2 xo th\u00ec s\u1ebd l\u00e0<\/p>\n\n\n\n<p>C\u00f4ng th\u1ee9c t\u00ednh l\u1ef1c \u0111\u00e0n h\u1ed3i \u0111\u01b0a v\u1eadt tr\u1edf v\u1ec1 v\u1ecb tr\u00ed c\u1ee7a l\u00f2 xo kh\u00f4ng bi\u1ebfn d\u1ea1ng l\u00e0:<\/p>\n\n\n\n<p>Khi t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c l\u1ef1c \u0111\u00e0n h\u1ed3i, m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c sau \u0111\u1ec3 t\u00ednh th\u1ebf n\u0103ng l\u1ef1c \u0111\u00e0n h\u1ed3i c\u1ee7a l\u00f2 xo. C\u00f4ng th\u1ee9c th\u1ebf n\u0103ng \u0111\u00e0n h\u1ed3i:<\/p>\n\n\n\n<p>Trong \u0111\u00f3:<\/p>\n\n\n\n<p>W\u0111h: L\u00e0 th\u1ebf n\u0103ng \u0111\u00e0n h\u1ed3i, \u0111\u01a1n v\u1ecb l\u00e0 J<\/p>\n\n\n\n<p>k: L\u00e0 \u0111\u1ed9 c\u1ee9ng c\u1ee7a l\u00f2 xo (N.m)<\/p>\n\n\n\n<p>x: \u0110\u1ed9 bi\u1ebfn d\u1ea1ng c\u1ee7a l\u00f2 xo (m)<\/p>\n\n\n\n<p>T\u00ecm hi\u1ec3u th\u1ebf n\u0103ng t\u0129nh \u0111i\u1ec7n<\/p>\n\n\n\n<p>Ngo\u00e0i th\u1ebf n\u0103ng tr\u1ecdng tr\u01b0\u1eddng v\u00e0 \u0111\u00e0n h\u1ed3i c\u00f2n c\u00f3 th\u00eam m\u1ed9t lo\u1ea1i th\u1ebf n\u0103ng kh\u00e1c \u0111\u00f3 l\u00e0 t\u0129nh \u0111i\u1ec7n. \u0110\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t l\u1ef1c b\u1ea3o to\u00e0n d\u01b0\u1edbi d\u1ea1ng t\u0129nh \u0111i\u1ec7n, \u0111\u01b0\u1ee3c t\u00ednh d\u1ef1a v\u00e0o c\u00f4ng th\u1ee9c:<\/p>\n\n\n\n<p>Trong \u0111\u00f3:<\/p>\n\n\n\n<p>q: l\u00e0 \u0111i\u1ec7n th\u1ebf<\/p>\n\n\n\n<p>V: \u0111i\u1ec7n t\u00edch c\u1ee7a v\u1eadt x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n<p>\u0110\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c q v\u00e0 V b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c F=qE.<\/p>\n\n\n\n<p>Hy v\u1ecdng v\u1edbi c\u00e1c th\u00f4ng tin trong b\u00e0i vi\u1ebft \u201cTh\u1ebf n\u0103ng l\u00e0 g\u00ec, c\u00f4ng th\u1ee9c t\u00ednh th\u1ebf n\u0103ng \u0111\u00e0n h\u1ed3i, tr\u1ecdng tr\u01b0\u1eddng\u201d s\u1ebd gi\u00fap \u00edch b\u1ea1n. \u0110\u1ec3 c\u00f3 th\u00eam nhi\u1ec1u ki\u1ebfn th\u1ee9c, th\u00f4ng tin h\u1eefu \u00edch kh\u00e1c, qu\u00fd b\u1ea1n \u0111\u1ecdc h\u00e3y truy c\u1eadp ngay website Vietlearn.org \u0111\u1ec3 t\u00ecm hi\u1ec3u nh\u00e9!<\/p>\n\n\n\n<p><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Th\u1ebf n\u0103ng l\u00e0 m\u1ed9t trong nh\u1eefng ch\u01b0\u01a1ng tr\u00ecnh h\u1ecdc quan tr\u1ecdng c\u1ee7a v\u1eadt l\u00fd 10. \u0110\u1ec3 c\u00f3 th\u1ec3 gi\u1ea3i h\u1ebft c\u00e1c b\u00e0i t\u1eadp v\u1ec1 th\u1ebf n\u0103ng \u0111\u00f2i h\u1ecfi h\u1ecdc sinh ph\u1ea3i n\u1eafm ch\u1eafc ki\u1ebfn th\u1ee9c. V\u1eady th\u1ebf n\u0103ng l\u00e0 g\u00ec? C\u00f4ng n\u0103ng l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c nh\u01b0 th\u1ebf n\u00e0o? [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[7],"tags":[],"class_list":["post-3424","post","type-post","status-publish","format-standard","hentry","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/3424","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=3424"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/3424\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=3424"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=3424"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=3424"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}