thi\u1ebft k\u1ebf<\/a> k\u00edch th\u01b0\u1edbc m\u1eb7t c\u1eaft c\u1ee7a c\u1ea5u ki\u1ec7n c\u00f4ng tr\u00ecnh m\u1ed9t c\u00e1ch h\u1ee3p l\u00ed nh\u1ec9?<\/p>\n\n\n\nHo\u00e1 ra l\u00e0, bi\u1ebfn d\u1ea1ng l\u00e0 h\u00ecnh \u1ea3nh c\u1ee7a l\u1ef1c. V\u00ed d\u1ee5 nh\u01b0 khi b\u1ea1n d\u00f9ng hai tay k\u00e9o s\u1ee3i d\u00e2y cao su, s\u1ee3i d\u00e2y b\u1ecb k\u00e9o d\u00e0i ra cho th\u1ea5y l\u1ef1c m\u00e0 b\u1ea1n d\u00f9ng. S\u1ee3i d\u00e2y m\u00e0 b\u1ea1n k\u00e9o c\u00e0ng d\u00e0i, ch\u1ee9ng t\u1ecf l\u1ef1c m\u00e0 b\u1ea1n d\u00f9ng c\u00e0ng l\u1edbn. \u1ee9ng su\u1ea5t c\u0169ng c\u00f3 h\u00ecnh \u1ea3nh ri\u00eang c\u1ee7a n\u00f3 – \u0111\u00f3 l\u00e0 bi\u1ebfn d\u1ea1ng. Bi\u1ebfn d\u1ea1ng l\u00e0 \u0111\u1ed9 bi\u1ebfn \u0111\u1ed5i h\u00ecnh d\u1ea1ng c\u1ee7a v\u1eadt th\u1ec3 sinh ra b\u1edfi t\u00e1c \u0111\u1ed9ng c\u1ee7a \u1ee9ng su\u1ea5t k\u00e9o (ho\u1eb7c \u1ee9ng su\u1ea5t n\u00e9n) ho\u1eb7c \u1ee9ng su\u1ea5t c\u1eaft. \u0110\u1ed9 l\u1edbn c\u1ee7a bi\u1ebfn d\u1ea1ng l\u00e0 t\u1ec9 s\u1ed1 gi\u1eefa l\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc ban \u0111\u1ea7u c\u1ee7a c\u1ea5u ki\u1ec7n. Ng\u01b0\u1eddi k\u0129 s\u01b0 th\u00f4ng qua bi\u1ebfn d\u1ea1ng c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y v\u00e0 n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c \u1ee9ng su\u1ea5t m\u00e0 ng\u01b0\u1eddi b\u00ecnh th\u01b0\u1eddng kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y.<\/p>\n\n\n\n
Quan h\u1ec7 t\u1ec9 l\u1ec7 c\u1ee7a \u1ee9ng su\u1ea5t v\u00e0 bi\u1ebfn d\u1ea1ng do Hooke, m\u1ed9t nh\u00e0 v\u1eadt l\u00ed h\u1ecdc, ng\u01b0\u1eddi Anh, ph\u00e1t hi\u1ec7n ra \u1edf th\u1ebf k\u1ec9 XVII, v\u00e0 n\u00eau ra th\u00e0nh \u0111\u1ecbnh lu\u1eadt n\u1ed5i ti\u1ebfng m\u00e0 sau n\u00e0y ng\u01b0\u1eddi ta g\u1ecdi l\u00e0 \u0111\u1ecbnh lu\u1eadt Hooke: trong gi\u1edbi h\u1ea1n \u0111\u00e0n h\u1ed3i c\u1ee7a v\u1eadt th\u1ec3, \u0111\u1ed9 l\u1edbn bi\u1ebfn d\u1ea1ng c\u1ee7a v\u1eadt th\u1ec3 t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi ngo\u1ea1i l\u1ef1c. V\u00ed d\u1ee5, m\u1ed9t thanh cao su d\u00e0y c\u1ee1 chi\u1ebfc b\u00fat m\u00e1y, d\u00e0i 30 cm, \u0111\u1ea7u d\u01b0\u1edbi treo m\u1ed9t v\u1eadt n\u1eb7ng 10 kg, n\u00f3 c\u0103ng d\u00e0i ra kho\u1ea3ng 5 cm; n\u1ebfu v\u1eadt treo v\u00e0o n\u1eb7ng 20 kg th\u00ec s\u1ebd c\u0103ng d\u00e0i ra 10 cm.<\/p>\n\n\n\n
Bi\u1ebft \u0111\u01b0\u1ee3c m\u1ed1i quan h\u1ec7 t\u1ebf nh\u1ecb gi\u1eefa \u1ee9ng su\u1ea5t v\u00e0 bi\u1ebfn d\u1ea1ng th\u00ec \u1ee9ng su\u1ea5t gi\u1ea5u m\u00ecnh b\u00ean trong v\u1eadt th\u1ec3, m\u1eb7c d\u00f9 “xu\u1ea5t qu\u1ef7 nh\u1eadp th\u1ea7n” c\u0169ng kh\u00f4ng qua \u0111\u01b0\u1ee3c “con m\u1eaft tinh t\u01b0\u1eddng” c\u1ee7a ng\u01b0\u1eddi k\u0129 s\u01b0.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: \u1ee8ng su\u1ea5t; Bi\u1ebfn d\u1ea1ng; \u0110\u1ecbnh lu\u1eadt Hooke.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
C\u00e1c nh\u00e0 th\u01a1 v\u1eabn g\u1ecdi con m\u1eaft l\u00e0 c\u1eeda s\u1ed5 c\u1ee7a t\u00e2m h\u1ed3n. C\u00f2n \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi l\u00e0m khoa h\u1ecdc k\u0129 thu\u1eadt, n\u00f3 l\u00e0 l\u1ee3i kh\u00ed \u0111\u1ec3 d\u00f2m ng\u00f3 b\u00ed m\u1eadt c\u1ee7a thi\u00ean nhi\u00ean. Ch\u1eb3ng ph\u1ea3i th\u1ebf sao? T\u1eeb con \u0111\u1eadp ch\u1eafn n\u01b0\u1edbc c\u00f3 th\u1ec3 c\u1eaft \u0111\u1ee9t \u0111\u1ec9nh l\u0169 \u0111ang g\u1ea7m r\u00fa lao xu\u1ed1ng […]<\/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":[15,7],"tags":[],"class_list":["post-5535","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5535","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=5535"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5535\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}