{"id":45,"date":"2023-06-26T20:54:55","date_gmt":"2023-06-26T20:54:55","guid":{"rendered":"https:\/\/physigeek.com\/pt\/forcas-opostas\/"},"modified":"2023-06-26T20:54:55","modified_gmt":"2023-06-26T20:54:55","slug":"forcas-opostas","status":"publish","type":"post","link":"https:\/\/physigeek.com\/pt\/forcas-opostas\/","title":{"rendered":"For\u00e7as opostas"},"content":{"rendered":"

Este artigo explica quais s\u00e3o as for\u00e7as opostas. Al\u00e9m disso, voc\u00ea encontrar\u00e1 v\u00e1rios exemplos reais de for\u00e7as opostas e qual a rela\u00e7\u00e3o entre esse tipo de for\u00e7as e a terceira lei de Newton. <\/p>\n

<\/span> Quais s\u00e3o as for\u00e7as opostas?<\/span><\/h2>\n

For\u00e7as opostas<\/strong> s\u00e3o for\u00e7as que possuem o mesmo m\u00f3dulo e a mesma dire\u00e7\u00e3o, mas cuja dire\u00e7\u00e3o \u00e9 oposta.<\/p>\n

Em outras palavras, duas for\u00e7as se op\u00f5em quando t\u00eam a mesma magnitude e a mesma dire\u00e7\u00e3o, mas suas dire\u00e7\u00f5es s\u00e3o opostas.<\/p>\n

Lembre-se que a dire\u00e7\u00e3o de uma for\u00e7a pode ser identificada atrav\u00e9s de sua representa\u00e7\u00e3o gr\u00e1fica, pois \u00e9 indicada pela ponta da seta que representa a for\u00e7a. <\/p>\n

<\/span> Exemplos de for\u00e7as opostas<\/span><\/h2>\n

Considerando a defini\u00e7\u00e3o de for\u00e7as opostas, a seguir est\u00e3o dois exemplos deste tipo de for\u00e7as explicados para que voc\u00ea possa entender melhor o seu significado.<\/p>\n

Por exemplo, quando duas equipes est\u00e3o jogando cabo de guerra, se em determinado momento a corda n\u00e3o se move, significa que as for\u00e7as exercidas pelas duas equipes s\u00e3o opostas. Neste caso, ambas as for\u00e7as t\u00eam a dire\u00e7\u00e3o da corda mas, logicamente, a dire\u00e7\u00e3o \u00e9 oposta, pois uma equipe empurra para a esquerda e a outra para a direita. Al\u00e9m disso, para que a corda n\u00e3o se mova, as duas for\u00e7as devem ter a mesma intensidade. <\/p>\n

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

Outro exemplo de for\u00e7as opostas \u00e9 o peso e a for\u00e7a normal. A for\u00e7a peso \u00e9 a for\u00e7a gravitacional com a qual a Terra puxa um corpo, e a for\u00e7a normal \u00e9 a for\u00e7a exercida pelo solo para neutralizar a for\u00e7a da gravidade para que um corpo possa repousar na superf\u00edcie da Terra.<\/p>\n

Portanto, a for\u00e7a do peso de uma pessoa \u00e9 vertical para baixo com uma certa magnitude, e a for\u00e7a normal exercida sobre a mesma pessoa \u00e9 vertical para cima com a mesma magnitude. Portanto, as duas for\u00e7as t\u00eam a mesma magnitude, a mesma dire\u00e7\u00e3o e uma dire\u00e7\u00e3o oposta, portanto s\u00e3o duas for\u00e7as opostas. <\/p>\n

<\/span> For\u00e7as opostas e terceira lei de Newton<\/span><\/h2>\n

Para finalizar a compreens\u00e3o do conceito de for\u00e7as opostas, vamos ver que rela\u00e7\u00e3o elas t\u00eam com a terceira lei de Newton, uma das regras mais importantes para a resolu\u00e7\u00e3o de exerc\u00edcios de f\u00edsica.<\/p>\n

Mais especificamente, a terceira lei de Newton diz que se um corpo exercer uma for\u00e7a sobre outro corpo, exercer\u00e1 uma for\u00e7a de mesma magnitude e dire\u00e7\u00e3o, mas na dire\u00e7\u00e3o oposta, sobre o primeiro corpo.<\/p>\n

Portanto, a terceira lei de Newton afirma que as for\u00e7as que dois corpos exercem um sobre o outro s\u00e3o sempre opostas.<\/p>\n

Para ver exemplos dessa lei no dia a dia, clique aqui: <\/p>\n

\u27a4<\/span> Veja:<\/strong> exemplos da terceira lei de Newton<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

Este artigo explica quais s\u00e3o as for\u00e7as opostas. Al\u00e9m disso, voc\u00ea encontrar\u00e1 v\u00e1rios exemplos reais de for\u00e7as opostas e qual a rela\u00e7\u00e3o entre esse tipo de for\u00e7as e a terceira lei de Newton. Quais s\u00e3o as for\u00e7as opostas? For\u00e7as opostas s\u00e3o for\u00e7as que possuem o mesmo m\u00f3dulo e a mesma dire\u00e7\u00e3o, mas cuja dire\u00e7\u00e3o \u00e9 …<\/p>\n

For\u00e7as opostas<\/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-45","post","type-post","status-publish","format-standard","hentry","category-dinamico"],"yoast_head":"\n\u25b7 Quais s\u00e3o as for\u00e7as opostas? 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