{"id":4064,"date":"2018-07-20T03:41:56","date_gmt":"2018-07-20T03:41:56","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=4064"},"modified":"2024-08-22T13:46:49","modified_gmt":"2024-08-22T13:46:49","slug":"estatica-03-estatica-de-um-corpo-extenso-maquinas-simples","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/formulario\/estatica-03-estatica-de-um-corpo-extenso-maquinas-simples\/","title":{"rendered":"Est\u00e1tica 03 – Est\u00e1tica de um corpo extenso \u2013 M\u00e1quinas simples"},"content":{"rendered":"

Formul\u00e1rio completo de F\u00edsica com informa\u00e7\u00f5es \u00fateis <\/b><\/span><\/span><\/span><\/p>\n

(Dicas para vestibulares)<\/b><\/span><\/span><\/span><\/p>\n

Est\u00e1tica 03<\/b><\/span><\/span><\/span><\/p>\n

Est\u00e1tica de um corpo extenso \u2013 M\u00e1quinas simples<\/b><\/span><\/span><\/span><\/p>\n

Momento (ou torque) de uma for\u00e7a<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

C\u00e1lculo do momento quando <\/b><\/span><\/span><\/span> for inclinada em rela\u00e7\u00e3o \u00e0 <\/b><\/span><\/span><\/span> <\/p>\n

S\u00e3o dois processos:<\/span><\/span><\/span><\/p>\n

<\/p>\n

Informa\u00e7\u00f5es \u00fateis <\/b><\/span><\/span><\/span>(dicas para vestibulares)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

Em rela\u00e7\u00e3o a um\u00a0<\/b><\/span><\/span><\/span>mesmo polo,<\/b><\/span><\/span><\/span>\u00a0o\u00a0<\/b><\/span><\/span><\/span>momento da for\u00e7a resultante<\/b><\/span><\/span><\/span>\u00a0\u00e9 f<\/b><\/span><\/span><\/span>ornecido <\/b><\/span><\/span><\/span>pela\u00a0<\/b><\/span><\/span><\/span>soma<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

alg\u00e9brica dos momentos de cada uma das for\u00e7as,<\/b><\/span><\/span><\/span>\u00a0ou seja,\u00a0<\/b><\/span><\/span><\/span>M<\/b><\/span><\/span><\/span>R<\/b><\/span><\/span><\/sub><\/span>\u00a0= M<\/b><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span>\u00a0+ M<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span>\u00a0+ M<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sub><\/span>\u00a0+ \u2026 M<\/b><\/span><\/span><\/span>N<\/b><\/span><\/span><\/sub><\/span>).<\/b><\/span><\/span><\/span><\/p>\n

\u00a0<\/span>Bin\u00e1rio<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>sistema\u00a0<\/b><\/span><\/span>formado por\u00a0<\/b><\/span><\/span>duas for\u00e7as de mesma intensidade, mesma dire\u00e7\u00e3o,<\/b><\/span><\/span>\u00a0mas\u00a0<\/b><\/span><\/span>sentidos<\/b><\/span><\/span> <\/b>contr\u00e1rios<\/b><\/span><\/span> <\/b>separadas por uma <\/b><\/span><\/span>dist\u00e2ncia d (bra\u00e7o do bin\u00e1rio).<\/b><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

\u00a0<\/span>Momento do bin\u00e1rio<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>\u00a0corresponde \u00e0\u00a0<\/b><\/span><\/span>soma alg\u00e9brica dos momentos das for\u00e7as<\/b><\/span><\/span>\u00a0\u00a0<\/b><\/span><\/span>\u00a0\u00a0<\/b><\/span><\/span>M<\/b><\/span><\/span>F<\/b><\/span><\/sub><\/span>\u00a0= + F.d<\/b><\/span><\/span>\u00a0\u00a0<\/b><\/span><\/span>\u00a0\u00a0<\/b><\/span><\/span>M<\/b><\/span><\/span>-F<\/b><\/span><\/sub><\/span>\u00a0= – F.d<\/b><\/span><\/span>\u00a0\u00a0<\/b><\/span><\/span>\u00a0 M<\/b><\/span><\/span>bin\u00e1rio<\/b><\/span><\/sub><\/span>\u00a0= + F.d \u2013 F.d\u00a0\u00a0<\/b><\/span><\/span>\u00a0\u00a0<\/b><\/span><\/span>M<\/b><\/span><\/span>bin\u00e1rio<\/b><\/span><\/sub><\/span>\u00a0= 0.<\/b><\/span><\/span><\/span><\/span><\/p>\n

Num\u00a0<\/b><\/span><\/span>bin\u00e1rio\u00a0<\/b><\/span><\/span>o <\/b><\/span><\/span>movimento de\u00a0<\/b><\/span><\/span>transla\u00e7\u00e3o \u00e9 nulo<\/b><\/span><\/span> <\/b>(F<\/b><\/span><\/span>R<\/b><\/span><\/sub><\/span>\u00a0= 0)<\/b><\/span><\/span>,<\/b><\/span><\/span>\u00a0<\/b><\/span><\/span>havendo <\/b><\/span><\/span>apenas <\/b><\/span><\/span>movimento de rota\u00e7\u00e3o.<\/b><\/span><\/span><\/span><\/span><\/p>\n

Condi\u00e7\u00f5es de equil\u00edbrio de um corpo extenso<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

Informa\u00e7\u00f5es \u00fateis <\/b><\/span><\/span><\/span>(dicas para vestibulares)<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

Considere uma\u00a0<\/b><\/span><\/span><\/span>escada r\u00edgida e homog\u00eanea MN, apoiada numa parede<\/b><\/span><\/span><\/span>\u00a0\u00a0<\/b><\/span><\/span><\/span>\u00a0 para que ela\u00a0<\/b><\/span><\/span><\/span>n\u00e3o escorregue e caia,<\/b><\/span><\/span><\/span>\u00a0no\u00a0<\/b><\/span><\/span><\/span>ponto N tem que ter atrito<\/b><\/span><\/span><\/span>, o que <\/b><\/span><\/span><\/span>n\u00e3o precisa ocorrer no ponto M.\u00a0<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

Essas tr\u00eas\u00a0<\/b><\/span><\/span><\/span>for\u00e7as obedecem ao teorema das tr\u00eas for\u00e7as de enunciado:<\/b><\/span><\/span><\/span>\u00a0<\/b><\/span><\/span><\/span>\u201c Se tr\u00eas for\u00e7as agem sobre um corpo de modo a mant\u00ea-lo em equil\u00edbrio, elas devem ser coplanares (mesmo plano) e concorrentes (seus prolongamentos devem se encontrar) num mesmo ponto (C)\u201d\u00a0<\/b><\/span><\/span><\/span><\/p>\n

<\/p>\n

M\u00e1quinas Simples<\/span><\/span><\/span><\/p>\n

<\/p>\n

Tipos de M\u00e1quinas Simples<\/span><\/span><\/span><\/p>\n

Alavanca Interfixa<\/span><\/span><\/span><\/p>\n

Alavanca Inter-resistente<\/span><\/span><\/span><\/p>\n

<\/p>\n

Alavanca Interpotente<\/span><\/span><\/span><\/p>\n

<\/p>\n

Informa\u00e7\u00f5es \u00fateis <\/b><\/span><\/span><\/span>(dicas para vestibulares)<\/b><\/span><\/span><\/span><\/p>\n

<\/a> <\/p>\n","protected":false},"excerpt":{"rendered":"

Formul\u00e1rio completo de F\u00edsica com informa\u00e7\u00f5es \u00fateis (Dicas para vestibulares) Est\u00e1tica 03 Est\u00e1tica de um corpo extenso \u2013 M\u00e1quinas simples Momento (ou torque) de uma for\u00e7a C\u00e1lculo do momento quando for inclinada em rela\u00e7\u00e3o \u00e0 S\u00e3o dois processos: Informa\u00e7\u00f5es \u00fateis (dicas para vestibulares) Em rela\u00e7\u00e3o a um\u00a0mesmo polo,\u00a0o\u00a0momento da for\u00e7a resultante\u00a0\u00e9 fornecido pela\u00a0soma alg\u00e9brica dos momentos de cada uma das<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3987,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-4064","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4064","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/comments?post=4064"}],"version-history":[{"count":1,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4064\/revisions"}],"predecessor-version":[{"id":4065,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4064\/revisions\/4065"}],"up":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3987"}],"wp:attachment":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/media?parent=4064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}