{"id":47,"date":"2023-06-26T20:12:45","date_gmt":"2023-06-26T20:12:45","guid":{"rendered":"https:\/\/physigeek.com\/pt\/peso-especifico\/"},"modified":"2023-06-26T20:12:45","modified_gmt":"2023-06-26T20:12:45","slug":"peso-especifico","status":"publish","type":"post","link":"https:\/\/physigeek.com\/pt\/peso-especifico\/","title":{"rendered":"Peso espec\u00edfico"},"content":{"rendered":"<p>Este artigo explica o que \u00e9 a gravidade espec\u00edfica e como ela \u00e9 calculada. Voc\u00ea encontrar\u00e1 a f\u00f3rmula do peso espec\u00edfico, suas unidades nos diferentes sistemas de medi\u00e7\u00e3o e uma tabela com os pesos espec\u00edficos dos materiais mais comuns. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFQue-es-el-peso-especifico\"><\/span> O que \u00e9 gravidade espec\u00edfica?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> <strong>Densidade espec\u00edfica<\/strong> \u00e9 a rela\u00e7\u00e3o entre o peso e o volume de uma subst\u00e2ncia. Em outras palavras, para calcular a gravidade espec\u00edfica de uma subst\u00e2ncia, seu peso deve ser dividido pelo volume que ocupa.<\/p>\n<p> A gravidade espec\u00edfica permite saber at\u00e9 que ponto a Terra atrai uma subst\u00e2ncia por cada unidade de volume. Assim, quanto maior a gravidade espec\u00edfica, significa que mais for\u00e7a gravitacional a Terra exerce para atrair essa subst\u00e2ncia.<\/p>\n<p> O s\u00edmbolo para densidade espec\u00edfica \u00e9 a letra grega gama (\u03b3).<\/p>\n<p> Lembre-se de que peso e massa s\u00e3o dois conceitos diferentes: peso \u00e9 a for\u00e7a da gravidade que a Terra exerce sobre um corpo ou objeto, enquanto massa \u00e9 a quantidade de mat\u00e9ria contida em um corpo ou objeto. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Formula-del-peso-especifico\"><\/span> F\u00f3rmula de gravidade espec\u00edfica<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> <strong>A gravidade espec\u00edfica \u00e9 igual ao peso de uma subst\u00e2ncia dividido pelo volume dessa subst\u00e2ncia.<\/strong> Portanto, para calcular a gravidade espec\u00edfica de uma subst\u00e2ncia, seu peso deve ser dividido pelo seu volume.<\/p>\n<p> A f\u00f3rmula para calcular o peso espec\u00edfico \u00e9, portanto: <\/p>\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/formule-de-poids-specifique.png\" alt=\"f\u00f3rmula de peso espec\u00edfico\" class=\"wp-image-3358\" width=\"223\" height=\"193\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/formule-de-poids-specifique-300x260.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/formule-de-poids-specifique.png 452w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<p> Al\u00e9m disso, como a densidade \u00e9 calculada dividindo a massa pelo volume, a densidade tamb\u00e9m pode ser expressa como uma fun\u00e7\u00e3o da densidade:<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-b68a16ac7ddb13f118ca7c2d145e5eac_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\gamma=\\cfrac{w}{V}=\\cfrac{m\\cdot g}{V}=\\rho \\cdot g\" title=\"Rendered by QuickLaTeX.com\" height=\"34\" width=\"168\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p> Ouro:<\/p>\n<ul>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-7b9abe136d2f0d53300727f373cfed43_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\gamma\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"10\" style=\"vertical-align: -4px;\"><\/p>\n<p> \u00e9 a densidade da subst\u00e2ncia<\/li>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-d4b432605ef5750fdc8e364f5bc8beea_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"w\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"13\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e9 o peso da subst\u00e2ncia<\/li>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-54e215a7a583b4f357a5a627420bcf2f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"V\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"14\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e9 o volume da subst\u00e2ncia<\/li>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-fdc40b8ad1cdad0aab9d632215459d28_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"m\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"15\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e9 a massa da subst\u00e2ncia<\/li>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-e88010d25c51c0c42c505ee1004ed182_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"g\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"9\" style=\"vertical-align: -4px;\"><\/p>\n<p> \u00e9 a gravidade<\/li>\n<li>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-e8e197a6f1572ae9b5a16039ea626388_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\rho\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"9\" style=\"vertical-align: -4px;\"><\/p>\n<p> \u00e9 a densidade da subst\u00e2ncia<\/li>\n<\/ul>\n<p> Por exemplo, sabemos que a densidade da \u00e1gua \u00e9 de aproximadamente 1000 kg\/ <sup>m3<\/sup> , ent\u00e3o se a gravidade for 9,8 m\/ <sup>s2<\/sup> , sua gravidade espec\u00edfica ser\u00e1:<\/p>\n<p class=\"has-text-align-center\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-46b196de060d247c2c583f821600f22c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\gamma=\\rho\\cdot g=1000\\cdot 9.8=9800 \\ N\/m^3\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"271\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<p> Poder\u00edamos tamb\u00e9m ter calculado o peso espec\u00edfico medindo a massa de um determinado volume de \u00e1gua, embora na realidade a rela\u00e7\u00e3o entre estas duas propriedades nos forne\u00e7a a densidade do material. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Unidades-del-peso-especifico\"><\/span> Unidades de Gravidade Espec\u00edfica<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Dada a defini\u00e7\u00e3o de peso espec\u00edfico, veremos quais s\u00e3o as unidades deste tipo de grandeza f\u00edsica para aprofundar o conceito.<\/p>\n<p> As <strong>unidades de gravidade espec\u00edfica<\/strong> no Sistema Internacional de Unidades (SI) s\u00e3o newtons divididos por metro c\u00fabico (N\/m <sup>3<\/sup> ). Isto faz sentido porque o newton \u00e9 a unidade de peso e o metro c\u00fabico corresponde \u00e0 unidade de volume.<\/p>\n<p> Por outro lado, no Sistema T\u00e9cnico o peso espec\u00edfico \u00e9 expresso em quilograma-for\u00e7a dividido por metro c\u00fabico (kgf\/m <sup>3<\/sup> ).<\/p>\n<p> E por \u00faltimo, no SIMELA (Sistema M\u00e9trico Legal da Argentina), o peso espec\u00edfico tamb\u00e9m \u00e9 medido atrav\u00e9s do newton dividido pelo metro c\u00fabico (N\/m <sup>3<\/sup> ). <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tabla-del-peso-especifico-de-sustancias\"><\/span> Tabela de peso espec\u00edfico de subst\u00e2ncias<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Abaixo segue uma tabela com os pesos espec\u00edficos das subst\u00e2ncias mais comuns:<\/p>\n<figure class=\"wp-block-table aligncenter is-style-stripes\">\n<table>\n<thead>\n<tr>\n<th> Subst\u00e2ncia<\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"> Densidade (kg\/ <sup>m3<\/sup> )<\/th>\n<th class=\"has-text-align-center\" data-align=\"center\"> Peso espec\u00edfico (N\/m <sup>3<\/sup> )<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td> \u00c1gua (4\u00baC)<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 1000<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 9800<\/td>\n<\/tr>\n<tr>\n<td> \u00e1gua do mar<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 1025<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10045<\/td>\n<\/tr>\n<tr>\n<td> Gelo<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 917<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 8986,6<\/td>\n<\/tr>\n<tr>\n<td> \u00c1lcool<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 790<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 7742<\/td>\n<\/tr>\n<tr>\n<td> \u00d3leo<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 915<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 8967<\/td>\n<\/tr>\n<tr>\n<td> ar frio<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 1,29<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 12.642<\/td>\n<\/tr>\n<tr>\n<td> ar quente<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 0,95<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 9h31<\/td>\n<\/tr>\n<tr>\n<td> Sangue humano (37\u00baC)<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 1060<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 10388<\/td>\n<\/tr>\n<tr>\n<td> Merc\u00fario<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 13600<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 133280<\/td>\n<\/tr>\n<tr>\n<td> Bebida<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 430<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 4214<\/td>\n<\/tr>\n<tr>\n<td> Ferro<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 7860<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 77028<\/td>\n<\/tr>\n<tr>\n<td> Ouro<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 19320<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 189336<\/td>\n<\/tr>\n<tr>\n<td> Liderar<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 11400<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 111720<\/td>\n<\/tr>\n<tr>\n<td> Oxig\u00eanio<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 1,43<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 14.014<\/td>\n<\/tr>\n<tr>\n<td> Hidrog\u00eanio<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 0,09<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 0,882 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"El-peso-especifico-y-la-densidad\"><\/span> Gravidade e densidade espec\u00edficas<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> A <strong>diferen\u00e7a entre densidade e densidade<\/strong> \u00e9 que s\u00e3o duas grandezas f\u00edsicas diferentes. A densidade \u00e9 definida como a rela\u00e7\u00e3o entre o peso e o volume de uma subst\u00e2ncia, enquanto a densidade \u00e9 calculada dividindo a massa pelo volume da subst\u00e2ncia.<\/p>\n<p> No entanto, densidade e densidade est\u00e3o matematicamente relacionadas. Mais precisamente, a gravidade espec\u00edfica de uma subst\u00e2ncia \u00e9 equivalente \u00e0 densidade da referida subst\u00e2ncia multiplicada pela gravidade. A gravidade \u00e9, portanto, a rela\u00e7\u00e3o entre as duas quantidades.<\/p>\n<p> Assim, a rela\u00e7\u00e3o que existe entre peso espec\u00edfico e densidade \u00e9 an\u00e1loga \u00e0 rela\u00e7\u00e3o entre peso e massa, pois para se obter o peso de um corpo \u00e9 necess\u00e1rio multiplicar sua massa pela gravidade.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Este artigo explica o que \u00e9 a gravidade espec\u00edfica e como ela \u00e9 calculada. Voc\u00ea encontrar\u00e1 a f\u00f3rmula do peso espec\u00edfico, suas unidades nos diferentes sistemas de medi\u00e7\u00e3o e uma tabela com os pesos espec\u00edficos dos materiais mais comuns. O que \u00e9 gravidade espec\u00edfica? Densidade espec\u00edfica \u00e9 a rela\u00e7\u00e3o entre o peso e o volume &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/physigeek.com\/pt\/peso-especifico\/\"> <span class=\"screen-reader-text\">Peso espec\u00edfico<\/span> Leia mais &raquo;<\/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":[4],"tags":[],"class_list":["post-47","post","type-post","status-publish","format-standard","hentry","category-conceitos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u25b7 Qual \u00e9 o peso espec\u00edfico? (F\u00f3rmula)<\/title>\n<meta name=\"description\" content=\"Explicamos o que \u00e9 peso espec\u00edfico e como \u00e9 calculado (f\u00f3rmula). Com tabela de pesos espec\u00edficos das subst\u00e2ncias mais comuns.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/physigeek.com\/pt\/peso-especifico\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u25b7 Qual \u00e9 o peso espec\u00edfico? (F\u00f3rmula)\" \/>\n<meta property=\"og:description\" content=\"Explicamos o que \u00e9 peso espec\u00edfico e como \u00e9 calculado (f\u00f3rmula). 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