{"id":4056,"date":"2018-07-20T03:25:04","date_gmt":"2018-07-20T03:25:04","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=4056"},"modified":"2024-08-22T14:00:07","modified_gmt":"2024-08-22T14:00:07","slug":"hidrostatica-05-teorema-de-arquimedes-empuxo","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/formulario\/hidrostatica-05-teorema-de-arquimedes-empuxo\/","title":{"rendered":"Hidrost\u00e1tica \u2013 05 – Teorema de Arquimedes \u2013 Empuxo"},"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

Hidrost\u00e1tica \u2013 05<\/b><\/span><\/span><\/span><\/p>\n

Teorema de Arquimedes \u2013 Empuxo<\/b><\/span><\/span><\/span><\/p>\n

Enunciado do princ\u00edpio de Arquimedes<\/b><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Express\u00e3o matem\u00e1tica do Empuxo<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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

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Express\u00e3o matem\u00e1tica do peso (for\u00e7a vertical e para baixo)<\/b><\/span><\/span><\/span><\/p>\n

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Qualquer\u00a0<\/b><\/span><\/span><\/span>corpo s\u00f3lido, quando imerso no ar<\/b><\/span><\/span><\/span>, tamb\u00e9m sofre <\/b><\/span><\/span><\/span>empuxo,<\/b><\/span><\/span><\/span>\u00a0pois\u00a0<\/b><\/span><\/span><\/span>desloca um volume igual ao seu, de ar.<\/b><\/span><\/span><\/span>\u00a0Mas, esse\u00a0<\/b><\/span><\/span><\/span>empuxo \u00e9 pr\u00e1ticamente desprez\u00edvel,\u00a0<\/b><\/span><\/span><\/span>porque o\u00a0<\/b><\/span><\/span><\/span>peso\u00a0<\/b><\/span><\/span><\/span>do\u00a0<\/b><\/span><\/span><\/span>volume da massa de ar <\/b><\/span><\/span><\/span>deslocada \u00e9 insignificante.<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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Causa do Empuxo<\/span><\/span><\/span><\/span><\/span><\/p>\n

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Os\u00a0<\/b><\/span><\/span><\/span>submarinos <\/b><\/span><\/span><\/span>possuem<\/b><\/span><\/span><\/span> tanques de ar <\/b><\/span><\/span><\/span>(c\u00e2maras de flutua\u00e7\u00e3o) que s\u00e3o instaladas entre as\u00a0<\/b><\/span><\/span><\/span>estruturas interna e externa do casco,\u00a0<\/b><\/span><\/span><\/span>com paredes bem refor\u00e7adas para resistirem \u00e0 press\u00e3o. O\u00a0<\/b><\/span><\/span><\/span>sobe e desce do submarino depende da quantidade de \u00e1gua nesses tanques, <\/b><\/span><\/span><\/span>que podem <\/b><\/span><\/span><\/span>aumentar ou diminuir devido ao ar comprimido.<\/b><\/span><\/span><\/span><\/p>\n

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Um\u00a0<\/b><\/span><\/span><\/span>peda\u00e7o de gelo flutua em equil\u00edbrio t\u00e9rmico\u00a0<\/b><\/span><\/span><\/span>com certa <\/b><\/span><\/span><\/span>quantidade de \u00e1gua depositada em um balde.<\/b><\/span><\/span><\/span><\/p>\n

\u00c0 medida que o gelo derrete\u00a0<\/b><\/span><\/span><\/span>o\u00a0<\/b><\/span><\/span><\/span>n\u00edvel da \u00e1gua no balde n\u00e3o se altera.<\/b><\/span><\/span><\/span><\/p>\n

A\u00a0<\/b><\/span><\/span><\/span>densidade do gelo \u00e9 menor que a densidade da \u00e1gua,\u00a0<\/b><\/span><\/span><\/span>ou seja, o\u00a0<\/b><\/span><\/span><\/span>gelo ocupa mais espa\u00e7o do que a quantidade de \u00e1gua equivalente.<\/b><\/span><\/span><\/span><\/p>\n

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Assim, o\u00a0<\/b><\/span><\/span><\/span>volume de \u00e1gua proveniente do gelo derretido \u00e9 igual ao volume de gelo que estava imerso.\u00a0<\/b><\/span><\/span><\/span>Por esse motivo, o\u00a0<\/b><\/span><\/span><\/span>n\u00edvel da \u00e1gua no balde n\u00e3o se altera.<\/b><\/span><\/span><\/span><\/p>\n

Observa\u00e7\u00e3o:<\/b><\/span><\/span><\/span>\u00a0Baseado nisso, observe que o\u00a0<\/b><\/span><\/span><\/span>derretimento de um iceberg (que fica flutuando parcialmente imerso na \u00e1gua) n\u00e3o altera o n\u00edvel do mar <\/b><\/span><\/span><\/span>o que ocorre no oceano \u00c1rtico.<\/b><\/span><\/span><\/span><\/p>\n

Mas,\u00a0<\/b><\/span><\/span><\/span>existe\u00a0<\/b><\/span><\/span><\/span>muito gelo sobre as montanhas\u00a0<\/b><\/span><\/span><\/span>e\u00a0<\/b><\/span><\/span><\/span>muito mais gelo sobre o continente do Polo Sul.\u00a0<\/b><\/span><\/span><\/span>\u00c9\u00a0justamente este gelo <\/b><\/span><\/span><\/span>que, ao derreter, escorre para o mar e contribui para o aumento do n\u00edvel de \u00e1gua.<\/b><\/span><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Formul\u00e1rio completo de F\u00edsica com informa\u00e7\u00f5es \u00fateis (Dicas para vestibulares) Hidrost\u00e1tica \u2013 05 Teorema de Arquimedes \u2013 Empuxo Enunciado do princ\u00edpio de Arquimedes Express\u00e3o matem\u00e1tica do Empuxo Informa\u00e7\u00f5es \u00fateis (dicas para vestibulares) Express\u00e3o matem\u00e1tica do peso (for\u00e7a vertical e para baixo) Qualquer\u00a0corpo s\u00f3lido, quando imerso no ar, tamb\u00e9m sofre empuxo,\u00a0pois\u00a0desloca um volume igual ao seu, de ar.\u00a0Mas, esse\u00a0empuxo \u00e9 pr\u00e1ticamente<\/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-4056","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4056","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=4056"}],"version-history":[{"count":1,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4056\/revisions"}],"predecessor-version":[{"id":4057,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/4056\/revisions\/4057"}],"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=4056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}