{"id":24,"date":"2023-06-27T10:49:12","date_gmt":"2023-06-27T10:49:12","guid":{"rendered":"https:\/\/physigeek.com\/pt\/forcas-coplanares\/"},"modified":"2023-06-27T10:49:12","modified_gmt":"2023-06-27T10:49:12","slug":"forcas-coplanares","status":"publish","type":"post","link":"https:\/\/physigeek.com\/pt\/forcas-coplanares\/","title":{"rendered":"For\u00e7as coplanares"},"content":{"rendered":"

Este artigo explica o que s\u00e3o for\u00e7as coplanares e voc\u00ea tamb\u00e9m ver\u00e1 exemplos de for\u00e7as coplanares. Voc\u00ea tamb\u00e9m encontrar\u00e1 a diferen\u00e7a entre for\u00e7as coplanares e n\u00e3o coplanares e quando duas for\u00e7as s\u00e3o coplanares e competem ao mesmo tempo. <\/p>\n

<\/span> O que s\u00e3o for\u00e7as coplanares?<\/span><\/h2>\n

For\u00e7as coplanares<\/strong> s\u00e3o for\u00e7as que atuam no mesmo plano. Ou seja, duas ou mais for\u00e7as s\u00e3o coplanares quando contidas no mesmo plano.<\/p>\n

Portanto, as for\u00e7as coplanares podem ser definidas matematicamente com vetores de dois componentes. Normalmente, quando voc\u00ea come\u00e7a a estudar f\u00edsica, costuma come\u00e7ar fazendo exerc\u00edcios de for\u00e7as coplanares, porque \u00e9 mais f\u00e1cil trabalhar com for\u00e7as bidimensionais.<\/p>\n

Um conceito relacionado com problemas deste tipo de for\u00e7as \u00e9 o de condi\u00e7\u00f5es de equil\u00edbrio, porque a partir destas condi\u00e7\u00f5es podem ser levantadas inc\u00f3gnitas e podem ser encontradas for\u00e7as desconhecidas. Voc\u00ea pode praticar com exerc\u00edcios resolvidos sobre este tema no seguinte link: <\/p>\n

\u27a4<\/span> Veja:<\/strong> exerc\u00edcios resolvidos em condi\u00e7\u00f5es de equil\u00edbrio<\/a> <\/div>\n

<\/span>Exemplo de for\u00e7as coplanares<\/span><\/h2>\n

Considerando a defini\u00e7\u00e3o de for\u00e7as coplanares, veremos um exemplo deste tipo de for\u00e7as.<\/p>\n

Por exemplo, quando empurramos um objeto contra o solo, o conjunto de for\u00e7as que atuam sobre ele \u00e9 coplanar.<\/p>\n

Duas for\u00e7as verticais atuam sobre o corpo: o peso, que \u00e9 devido \u00e0 gravidade da Terra, e a for\u00e7a normal, que se op\u00f5e \u00e0 for\u00e7a do peso. Por outro lado, atua apenas uma for\u00e7a horizontal, esta \u00e9 a for\u00e7a que \u00e9 aplicada ao corpo na tentativa de mov\u00ea-lo.<\/p>\n

Assim, como todas as for\u00e7as do sistema podem ser definidas num \u00fanico plano (o da tela), estas s\u00e3o tr\u00eas for\u00e7as coplanares. <\/p>\n

\"for\u00e7as<\/figure>\n

Uma dica para identificar for\u00e7as coplanares \u00e9 que se todas as for\u00e7as estiverem contidas na tela (ou papel), se nenhuma for\u00e7a estiver indo para fora ou para dentro da tela, ent\u00e3o elas s\u00e3o for\u00e7as coplanares.<\/p>\n

Deve-se notar que qualquer sistema de for\u00e7as coplanares pode ser simplificado e todas as for\u00e7as substitu\u00eddas por uma for\u00e7a resultante. Voc\u00ea pode ver como isso \u00e9 feito clicando aqui: <\/p>\n

\u27a4<\/span> Veja:<\/strong> como calcular a for\u00e7a resultante em f\u00edsica<\/a> <\/div>\n

<\/span> For\u00e7as coplanares e n\u00e3o coplanares<\/span><\/h2>\n

A diferen\u00e7a entre for\u00e7as coplanares e for\u00e7as n\u00e3o coplanares<\/strong> \u00e9 que as for\u00e7as coplanares atuam no mesmo plano, enquanto as for\u00e7as n\u00e3o coplanares atuam em planos diferentes. <\/p>\n

\"for\u00e7as<\/figure>\n

Portanto, para definir for\u00e7as coplanares s\u00e3o necess\u00e1rios vetores com apenas duas coordenadas, mas para expressar for\u00e7as n\u00e3o coplanares s\u00e3o necess\u00e1rios vetores com tr\u00eas coordenadas. Porque as for\u00e7as n\u00e3o coplanares s\u00e3o definidas no espa\u00e7o.<\/p>\n

Quando voc\u00ea come\u00e7a a ensinar f\u00edsica, normalmente s\u00f3 resolve problemas com for\u00e7as coplanares, porque a dificuldade aumenta dramaticamente com todas as tr\u00eas dimens\u00f5es. Portanto, se voc\u00ea est\u00e1 apenas come\u00e7ando, qualquer problema que encontrar certamente envolver\u00e1 for\u00e7as coplanares. <\/p>\n

<\/span> For\u00e7as coplanares e concorrentes<\/span><\/h2>\n

Duas for\u00e7as s\u00e3o coplanares e concorrentes<\/strong> quando atuam no mesmo plano e, al\u00e9m disso, suas linhas de a\u00e7\u00e3o se cruzam em um ponto.<\/p>\n

Uma maneira de identificar for\u00e7as coplanares e concorrentes \u00e9 ver se elas est\u00e3o no mesmo plano e n\u00e3o s\u00e3o paralelas. Se duas ou mais for\u00e7as vetoriais pertencem ao mesmo plano e n\u00e3o s\u00e3o paralelas, isso significa que suas extens\u00f5es se cruzam em um ponto do plano; portanto, s\u00e3o for\u00e7as coplanares e concorrentes.<\/p>\n

Para ver exemplos desse tipo de for\u00e7a, clique aqui: <\/p>\n

\u27a4<\/span> Veja:<\/strong> exemplos de for\u00e7as concorrentes<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

Este artigo explica o que s\u00e3o for\u00e7as coplanares e voc\u00ea tamb\u00e9m ver\u00e1 exemplos de for\u00e7as coplanares. Voc\u00ea tamb\u00e9m encontrar\u00e1 a diferen\u00e7a entre for\u00e7as coplanares e n\u00e3o coplanares e quando duas for\u00e7as s\u00e3o coplanares e competem ao mesmo tempo. O que s\u00e3o for\u00e7as coplanares? For\u00e7as coplanares s\u00e3o for\u00e7as que atuam no mesmo plano. Ou seja, duas …<\/p>\n

For\u00e7as coplanares<\/span> Leia mais »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[5],"tags":[],"class_list":["post-24","post","type-post","status-publish","format-standard","hentry","category-dinamico"],"yoast_head":"\n\u25b7 O que s\u00e3o for\u00e7as coplanares? 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