{"id":122122,"date":"2024-07-30T18:00:00","date_gmt":"2024-07-30T21:00:00","guid":{"rendered":"https:\/\/vestibulares.estrategia.com\/portal\/?p=122122"},"modified":"2024-08-26T14:04:42","modified_gmt":"2024-08-26T17:04:42","slug":"conservacao-de-energia-mecanica","status":"publish","type":"post","link":"https:\/\/vestibulares.estrategia.com\/portal\/materias\/fisica\/conservacao-de-energia-mecanica\/","title":{"rendered":"Conserva\u00e7\u00e3o de energia mec\u00e2nica: conceitos e f\u00f3rmulas\u00a0"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Os estudos f&iacute;sicos consideram que a <span id=\"urn:enhancement-f7a82431-4703-465e-99d1-1c517d898390\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> &eacute; uma entidade que n&atilde;o pode ser destru&iacute;da ou gerada, mas transformada, conservada ou dissipada. Conserva&ccedil;&atilde;o de <span id=\"urn:enhancement-929fcd4c-6d6e-4030-9b2a-2cc5a4e8fce1\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> &eacute; o nome dado ao processo em que n&atilde;o ocorre nenhuma <span id=\"urn:enhancement-f5e0fd09-0c66-405d-ac01-94330a5f38df\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/forca\">for&ccedil;a<\/span> dissipativa em um corpo, ent&atilde;o, o valor de sua <span id=\"urn:enhancement-7dfaaf5d-ecc1-4c98-934f-6ebc8238c8b1\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> total &eacute; o mesmo ao longo de todo o per&iacute;odo observado.<p class=\"wp-block-paragraph\">Para al&eacute;m de um simples <span id=\"urn:enhancement-09370fdb-7818-4e5d-9ff0-215261ebb7db\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/axiomas\">postulado<\/span> f&iacute;sico, esse princ&iacute;pio da mec&acirc;nica &eacute; o fundamento para diversas atividades e equipamentos do dia a dia. Por exemplo, a partir da quantidade de <span id=\"urn:enhancement-f82658fd-2fae-48df-bca6-a5a51abaa34c\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-potencial-gravitacional\">energia potencial gravitacional<\/span> que est&aacute; armazenada em um corpo de altura h, &eacute; poss&iacute;vel inferir qual velocidade ele poder&aacute; atingir em uma queda livre, entre diversas outras situa&ccedil;&otilde;es que aplicam esse conceito.<\/p><p class=\"wp-block-paragraph\">Dada a import&acirc;ncia e recorr&ecirc;ncia da conserva&ccedil;&atilde;o da <span id=\"urn:enhancement-3193f042-c8fb-48f3-8698-aef3d44353e7\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> para o cotidiano, diversos vestibulares cobram, de maneira espec&iacute;fica, o conhecimento sobre esse princ&iacute;pio, tanto em quest&otilde;es alternativas quanto dissertativas. Para te ajudar na consolida&ccedil;&atilde;o desse conte&uacute;do, o Estrat&eacute;gia Vestibulares preparou este material que resume os principais t&oacute;picos do assunto!<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Navegue pelo conte\u00fado<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/fisica\/conservacao-de-energia-mecanica\/#Conservacao-da-energia-mecanica\" >Conserva&ccedil;&atilde;o da energia mec&acirc;nica<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/fisica\/conservacao-de-energia-mecanica\/#Aplicacoes-do-conceito-de-conservacao-da-energia-mecanica\" >Aplica&ccedil;&otilde;es do conceito de conserva&ccedil;&atilde;o da energia mec&acirc;nica<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/fisica\/conservacao-de-energia-mecanica\/#Estude-para-o-vestibular-com-o-Estrategia\" >Estude para o vestibular com o Estrat&eacute;gia!<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-conservacao-da-energia-mecanica\"><span class=\"ez-toc-section\" id=\"Conservacao-da-energia-mecanica\"><\/span>Conserva&ccedil;&atilde;o da energia mec&acirc;nica<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">O termo conserva&ccedil;&atilde;o faz refer&ecirc;ncia &agrave;quilo que se preserva, para que n&atilde;o se perca ou n&atilde;o se destrua. E &eacute; esse o sentido do princ&iacute;pio de conserva&ccedil;&atilde;o da <span id=\"urn:enhancement-8ecf1d40-1427-4949-b25b-99d05e9ec1eb\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span>: a <span id=\"urn:enhancement-d5728699-6316-4814-a09e-e37e967b266d\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> do corpo &eacute; mantida a mesma, desde que n&atilde;o tenha a a&ccedil;&atilde;o de for&ccedil;as dissipativas sobre ele.&nbsp;<\/p><p class=\"wp-block-paragraph\">Nesse caso, for&ccedil;as dissipativas s&atilde;o todas aquelas que &ldquo;roubam&rdquo; <span id=\"urn:enhancement-08394546-7d7a-4361-813c-14313be1128d\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span>, ou seja,&nbsp; causam perda de <span id=\"urn:enhancement-781c9a6a-6af1-4840-8ae1-701d2733b11f\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> no corpo quando atuam sobre ele. Um dos maiores exemplos &eacute; a for&ccedil;a de <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/fisica\/atrito-estatico\/\">atrito<\/a>, que acontece quando um corpo se desloca em uma superf&iacute;cie e h&aacute; perda de <span id=\"urn:enhancement-853a385f-6fa9-4d2b-b9f3-9b0822c8e578\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span>. Nesse caso, ao longo do tempo, a <span id=\"urn:enhancement-acb72f3b-8ada-459d-98c8-263bc56c909c\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> total do corpo diminui ao longo do tempo.<\/p><p class=\"wp-block-paragraph\">Na aus&ecirc;ncia dessas for&ccedil;as dissipativas, o corpo mant&eacute;m-se com uma <span id=\"urn:enhancement-59983015-e75d-4bb3-babb-1529c9e8e7d9\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> total igual ao longo de todo o per&iacute;odo observado. Essa <span id=\"urn:enhancement-7f97cc8a-f3ea-4a47-af4e-87490fb4b2cc\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> total considera a soma entre a <span id=\"urn:enhancement-4256e64b-1da2-4e08-9a45-bdf662f00452\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial e a <span id=\"urn:enhancement-3dd6caea-082f-45d2-8355-821f64b29cfb\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span> do corpo.<\/p><h3 class=\"wp-block-heading\" id=\"h-energia-mecanica-total\">Energia mec&acirc;nica total<\/h3><p class=\"wp-block-paragraph\">A <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/fisica\/energia-mecanica\/\">energia mec&acirc;nica <\/a>&eacute; um conceito f&iacute;sico que considera a capacidade de um corpo de realizar <span id=\"urn:enhancement-6acb6122-a4f1-4801-ac97-e6e03d58fa46\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/trabalho\">trabalho<\/span>. Quando essa <span id=\"urn:enhancement-537538be-6c6b-4581-9a87-697aedb94b3c\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> est&aacute; relacionada ao movimento, &eacute; chamada de <span id=\"urn:enhancement-15db1ec6-f23e-4828-b509-a3486c2281d7\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span>, que vem do grego &ldquo;<em>kinesis&rdquo;<\/em>, de significado &ldquo;movimento&rdquo;. Por outro lado, em alguns casos, a posi&ccedil;&atilde;o do corpo no espa&ccedil;o faz com que ele tenha uma <span id=\"urn:enhancement-780d979e-8276-4a68-beb6-4d1c15d31541\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> armazenada, que &eacute; a <span id=\"urn:enhancement-d8a4f712-70c0-4beb-9361-9787ffa8eb2f\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial.&nbsp;<\/p><p class=\"wp-block-paragraph\">A <span id=\"urn:enhancement-fcf5093e-82ff-4fdc-baf3-980166bc4e92\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> total de um sistema &eacute; a soma entre a <span id=\"urn:enhancement-cff4e78d-028e-48db-a977-75a7a8b43efa\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial e a <span id=\"urn:enhancement-fdd74f14-a1d7-4bc7-ba1e-682dafeeebc9\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span> nesse corpo, como mostra a f&oacute;rmula abaixo:<\/p><p class=\"has-text-align-center wp-block-paragraph\"><span id=\"urn:enhancement-ebcb9886-ecdc-4901-b847-5e3b66b45aea\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">Energia mec&acirc;nica<\/span> total = <span id=\"urn:enhancement-6e5d13dc-ec74-4512-868a-0608f88e5ca8\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial + <span id=\"urn:enhancement-ab4ccd3b-8995-4381-973b-22ea67cab911\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span>&nbsp;<\/p><p class=\"wp-block-paragraph\">Nos casos em que o corpo est&aacute; em repouso, n&atilde;o h&aacute; movimento, ou seja, a velocidade &eacute; nula (V=0). Assim, a <span id=\"urn:enhancement-6b36b3db-304f-448a-a67d-9cabe258849b\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span> tamb&eacute;m &eacute; nula e, portanto, a <span id=\"urn:enhancement-d51e03c5-2ba0-4a45-80a2-d3642d6425f2\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> do sistema &eacute; decorrente apenas da <span id=\"urn:enhancement-7e318229-ef2b-47d8-b316-ed43b6ce1bae\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial.&nbsp;<\/p><p class=\"has-text-align-center wp-block-paragraph\"><span id=\"urn:enhancement-ce4938db-a3b8-4fff-a72a-e1859daf209b\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">Energia mec&acirc;nica<\/span> total = <span id=\"urn:enhancement-88dbe294-d0df-4d8f-9df4-c87b846329ed\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial + <span id=\"urn:enhancement-0212e92e-6620-46af-8681-28b07376429e\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span><\/p><p class=\"has-text-align-center wp-block-paragraph\"><span id=\"urn:enhancement-0e9f183e-7ec4-494e-8582-62224add34a3\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">Energia cin&eacute;tica<\/span> = m.V<sup>2<\/sup>\/2<\/p><p class=\"has-text-align-center wp-block-paragraph\">&nbsp;<span id=\"urn:enhancement-da911508-e685-4945-8ed9-3783b80ec52c\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">Energia mec&acirc;nica<\/span> total = <span id=\"urn:enhancement-23edf2aa-7bb8-40d4-aff0-cde6317b0e15\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial + m.V<sup>2<\/sup>\/2<br><span id=\"urn:enhancement-7dd61bdd-86b7-4298-b387-33c6b20f7e09\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">Energia mec&acirc;nica<\/span> total = <span id=\"urn:enhancement-fe1c6c9c-9d66-4802-89fc-aa2b715f3c19\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial + m.0<sup>2<\/sup>\/2<br><span id=\"urn:enhancement-22d34cba-c1c3-4614-b74b-581e64035841\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">Energia mec&acirc;nica<\/span> total = <span id=\"urn:enhancement-f2f6f053-75ff-40cb-86ae-d51cd3eb5b26\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial + 0<br><span id=\"urn:enhancement-2cf8e885-fd9b-4a46-acbc-01c41d554851\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">Energia mec&acirc;nica<\/span> total = <span id=\"urn:enhancement-bd0ee2dd-48e8-4e7e-92bb-f5bdfda4a998\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial&nbsp;<\/p><p class=\"wp-block-paragraph\">A partir do conceito de <span id=\"urn:enhancement-c63eebc8-b7de-4433-882b-7d8b50307255\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> total, &eacute; definido que&nbsp; a conserva&ccedil;&atilde;o da <span id=\"urn:enhancement-2576c330-e4eb-4918-8bd0-a45648c1edc3\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> acontece quando a soma das energias cin&eacute;tica e potencial &eacute; igual em todo o trajeto, ao longo de todo o tempo.&nbsp;<\/p><p class=\"wp-block-paragraph\">Por exemplo, um corpo de massa 10kg que est&aacute; parado sobre uma ladeira com 10 metros de altura, sofre influ&ecirc;ncia da <span id=\"urn:enhancement-82ed3b89-f176-4173-8730-f5478afa693f\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/gravidade\">gravidade<\/span> g = 10m\/s<sup>2<\/sup> e, assim, armazena <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/fisica\/energia-gravitacional\/\" target=\"_blank\">energia potencial gravitacional <\/a>(E<sub>Pgrav<\/sub>), que &eacute; mensurada pela f&oacute;rmula E<sub>Pgrav <\/sub>= m.g.h &rarr; E<sub>Pgrav<\/sub> = 10.10.10 = 1000 J.&nbsp;<\/p><p class=\"wp-block-paragraph\">Como demonstrado acima, como o corpo est&aacute; em repouso, sua <span id=\"urn:enhancement-12080b25-114d-4b1c-afef-6f0b497fdf5b\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span> &eacute; nula, de forma que a <span id=\"urn:enhancement-306dfca0-ee56-4a9a-b298-819a0de8917f\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial (1000 J) &eacute; a <span id=\"urn:enhancement-8a946be7-9ace-4665-8bf4-41c02aeae956\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> total nesse objeto.<\/p><p class=\"wp-block-paragraph\">Ent&atilde;o, se a entidade f&iacute;sica entrar em movimento, sua <span id=\"urn:enhancement-bf71512c-6030-49b7-b9bb-2e6cc3d17e40\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia\">energia<\/span> potencial ser&aacute; convertida em movimento, ou seja, em <span id=\"urn:enhancement-81581569-b30b-42d9-9a10-8eba9621d788\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span>. A quest&atilde;o &eacute; que, quando h&aacute; conserva&ccedil;&atilde;o de <span id=\"urn:enhancement-6f7bf32a-8d3b-4812-b8c7-24efe1485682\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span>, n&atilde;o importa quais movimentos sejam realizados, a soma entre <span id=\"urn:enhancement-3c1c7ecc-83bd-499e-b275-b993b13baf6c\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span> e potencial ser&aacute; sempre de 1000 J.<\/p><h2 class=\"wp-block-heading\" id=\"h-aplicacoes-do-conceito-de-conservacao-da-energia-mecanica\"><span class=\"ez-toc-section\" id=\"Aplicacoes-do-conceito-de-conservacao-da-energia-mecanica\"><\/span>Aplica&ccedil;&otilde;es do conceito de conserva&ccedil;&atilde;o da energia mec&acirc;nica<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">H&aacute; duas energias potenciais mais comuns no cotidiano:<\/p><ul class=\"wp-block-list\">\n<li>A energia potencial gravitacional, que relaciona-se com a possibilidade de movimenta&ccedil;&atilde;o a partir da acelera&ccedil;&atilde;o da gravidade, considerando que o corpo est&aacute; a uma altura h qualquer do solo; e&nbsp;<\/li>\n\n\n\n<li>A energia potencial el&aacute;stica, quando um corpo est&aacute; preso a um material el&aacute;stico e esse sistema armazena uma quantidade energia potencial a partir da possibilidade de movimenta&ccedil;&atilde;o dessa mola ou el&aacute;stico.<\/li>\n<\/ul><p class=\"wp-block-paragraph\">Um exemplo de aplica&ccedil;&atilde;o do princ&iacute;pio da conserva&ccedil;&atilde;o de <span id=\"urn:enhancement-51632d0b-0af9-42a6-8ebc-b4632e290990\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> s&atilde;o as rodas gigantes, considerando situa&ccedil;&otilde;es ideais em que for&ccedil;as dissipativas n&atilde;o ajam sobre o sistema. Ent&atilde;o, toda vez que a roda encontra-se no ponto mais alto da <span id=\"urn:enhancement-58963ee3-0f8c-44f1-adbf-6dfa81820df5\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/trajetoria\">trajet&oacute;ria<\/span>, sua <span id=\"urn:enhancement-2ca4d658-f358-4216-983a-632cdad9e72e\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-potencial-gravitacional\">energia potencial gravitacional<\/span> &eacute; m&aacute;xima e corresponde &agrave; <span id=\"urn:enhancement-cea2e3fd-bcd1-4376-b010-f7ab5317f3fe\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> total.&nbsp;<\/p><p class=\"wp-block-paragraph\">Da mesma forma, as montanhas-russas adquirem <span id=\"urn:enhancement-48ba39f0-d935-46bd-876a-58e86bca3e47\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-potencial-gravitacional\">energia potencial gravitacional<\/span> no topo de sua <span id=\"urn:enhancement-47b02b9c-9088-41e7-83bf-8530cdb26ffc\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/trajetoria\">trajet&oacute;ria<\/span> e, &agrave; medida que descem as grandes quedas de seus trilhos, sofrem transforma&ccedil;&atilde;o em <span id=\"urn:enhancement-c31ecc55-ca93-4fb1-a08c-5b2753897b4d\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span>, que gera movimentos r&aacute;pidos.<\/p><p class=\"wp-block-paragraph\">Outro exemplo seria um estilingue, ferramenta que permite o lan&ccedil;amento de pedras para atingir um alvo, a partir de um material estic&aacute;vel. Nesses casos, a <span id=\"urn:enhancement-bf15e1ef-2a7a-4bb1-a6f4-5074c994a996\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-potencial-elastica\">energia potencial el&aacute;stica<\/span> gerada a partir da deforma&ccedil;&atilde;o do material el&aacute;stico gera <span id=\"urn:enhancement-371319b6-04b6-44f3-b722-9f50f9f402e7\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-cinetica\">energia cin&eacute;tica<\/span> para a movimenta&ccedil;&atilde;o da pedra.<\/p><p class=\"wp-block-paragraph\">Diversos outros sistemas do dia a dia utilizam a conserva&ccedil;&atilde;o da <span id=\"urn:enhancement-d4b6d80d-0005-4b1a-bd00-f051969568c6\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/energia-mecanica\">energia mec&acirc;nica<\/span> como princ&iacute;pio para seu funcionamento, inclusive os <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/fisica\/pendulos\/\" target=\"_blank\">p&ecirc;ndulos <\/a>de rel&oacute;gios, que movimentam-se conforme esses pressupostos.&nbsp;<\/p><h2 class=\"wp-block-heading\" id=\"h-estude-para-o-vestibular-com-o-estrategia\"><span class=\"ez-toc-section\" id=\"Estude-para-o-vestibular-com-o-Estrategia\"><\/span>Estude para o vestibular com o Estrat&eacute;gia!<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Se quiser aprofundar seus conhecimentos em mec&acirc;nica e f&iacute;sica em geral, acompanhe o canal do YouTube do Estrat&eacute;gia Vestibulares. Diversas aulas s&atilde;o postadas como introdu&ccedil;&atilde;o, explica&ccedil;&atilde;o ou revis&atilde;o de conte&uacute;dos essenciais para os principais vestibulares nacionais.&nbsp;<\/p><figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"cs-embed cs-embed-responsive\"><iframe title=\"T&oacute;picos de Mec&acirc;nica - F&iacute;sica para ENEM e Vestibulares: Prof. Henrique Goulart\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/g1Dmk_csyDs?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure><p class=\"wp-block-paragraph\">Gostou do conte&uacute;do? Tenha acesso a diversos resumos e explica&ccedil;&otilde;es did&aacute;ticas sobre as principais f&oacute;rmulas de f&iacute;sica, qu&iacute;mica, matem&aacute;tica, al&eacute;m de um vasto material de todas as disciplinas importantes para os vestibulares. Tudo isso est&aacute; dispon&iacute;vel nos cursos da Coruja, em PDFs ou aulas. Conhe&ccedil;a mais agora mesmo!<\/p><p class=\"wp-block-paragraph\"><a id=\"cta\" class=\"cta-imagem\" href=\"https:\/\/vestibulares.estrategia.com\/cursos\/\" target=\"blank\">\n                <img decoding=\"async\" width=\"100%\" src=\"https:\/\/vestibulares.estrategia.com\/portal\/wp-content\/uploads\/2021\/12\/EV4.jpg\" alt=\"CTA - Estrat\u00e9gia Vestibulares 4\" title=\"CTA - Estrat\u00e9gia Vestibulares 4\">\n        <\/a>\n\n\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"Os estudos f&iacute;sicos consideram que a energia &eacute; uma entidade que n&atilde;o pode ser destru&iacute;da ou gerada, mas&hellip;\n","protected":false},"author":23,"featured_media":122133,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[],"class_list":["post-122122","post","type-post","status-publish","format-standard","has-post-thumbnail","category-fisica"],"acf":[],"yoast_head":"<!-- This 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