{"id":397,"date":"2023-06-19T15:26:07","date_gmt":"2023-06-19T15:26:07","guid":{"rendered":"https:\/\/physigeek.com\/pt\/aceleracao-centripeta-ou-aceleracao-normal\/"},"modified":"2023-06-19T15:26:07","modified_gmt":"2023-06-19T15:26:07","slug":"aceleracao-centripeta-ou-aceleracao-normal","status":"publish","type":"post","link":"https:\/\/physigeek.com\/pt\/aceleracao-centripeta-ou-aceleracao-normal\/","title":{"rendered":"Acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal)"},"content":{"rendered":"<p>Este artigo explica o que \u00e9 acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal) na f\u00edsica. Da mesma forma, voc\u00ea descobrir\u00e1 como calcular a acelera\u00e7\u00e3o centr\u00edpeta, bem como um exerc\u00edcio resolvido para entender melhor o conceito. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFQue-es-la-aceleracion-centripeta-o-aceleracion-normal\"><\/span> O que \u00e9 acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal)?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> <strong>A acelera\u00e7\u00e3o centr\u00edpeta<\/strong> , tamb\u00e9m chamada de <strong>acelera\u00e7\u00e3o normal<\/strong> ou <strong>acelera\u00e7\u00e3o radial<\/strong> , \u00e9 a acelera\u00e7\u00e3o que provoca a mudan\u00e7a na dire\u00e7\u00e3o da velocidade de um corpo que descreve um movimento circular. A acelera\u00e7\u00e3o centr\u00edpeta \u00e9 perpendicular \u00e0 velocidade do corpo em movimento e aponta para o centro do movimento circular.<\/p>\n<p> Portanto, a acelera\u00e7\u00e3o centr\u00edpeta \u00e9 a componente vetorial da acelera\u00e7\u00e3o de um corpo em movimento que causa movimento circular. Porque se o corpo n\u00e3o tivesse acelera\u00e7\u00e3o centr\u00edpeta, o corpo continuaria em linha reta e portanto n\u00e3o giraria.<\/p>\n<p> Em geral, a acelera\u00e7\u00e3o centr\u00edpeta \u00e9 representada pelo s\u00edmbolo <sub>ac<\/sub> , embora o s\u00edmbolo <sub>an<\/sub> (para acelera\u00e7\u00e3o normal) ou <sub>at<\/sub> (para acelera\u00e7\u00e3o radial) tamb\u00e9m possa ser utilizado. <\/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\/acceleration-normale-et-acceleration-tangentielle.png\" alt=\"acelera\u00e7\u00e3o normal\" class=\"wp-image-7327\" width=\"170\" height=\"209\"><\/figure>\n<p> A acelera\u00e7\u00e3o tangencial (a <sub>t<\/sub> ) e a acelera\u00e7\u00e3o centr\u00edpeta (a <sub>c<\/sub> ) s\u00e3o as duas componentes vetoriais da acelera\u00e7\u00e3o de um m\u00f3bile que descreve um movimento circular n\u00e3o uniforme. A acelera\u00e7\u00e3o tangencial \u00e9 tangente \u00e0 trajet\u00f3ria do movimento circular, enquanto a acelera\u00e7\u00e3o centr\u00edpeta aponta em dire\u00e7\u00e3o ao centro da trajet\u00f3ria circular. A seguir veremos em detalhes quais s\u00e3o as diferen\u00e7as entre acelera\u00e7\u00e3o tangencial e acelera\u00e7\u00e3o centr\u00edpeta.<\/p>\n<p> Resumindo, se um corpo descreve um movimento circular, isso significa que ele possui uma acelera\u00e7\u00e3o centr\u00edpeta, pois \u00e9 a componente da acelera\u00e7\u00e3o que muda a dire\u00e7\u00e3o da velocidade e, portanto, a causa do corpo descrever um movimento curvil\u00edneo. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Formula-de-la-aceleracion-centripeta\"><\/span> F\u00f3rmula de acelera\u00e7\u00e3o centr\u00edpeta<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> No movimento circular uniforme, a acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal) \u00e9 igual ao quadrado da velocidade tangencial dividida pelo raio da trajet\u00f3ria. A acelera\u00e7\u00e3o centr\u00edpeta tamb\u00e9m pode ser calculada multiplicando o quadrado da velocidade angular pelo raio da trajet\u00f3ria.<\/p>\n<p> Portanto, a <strong>f\u00f3rmula para calcular a acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal)<\/strong> \u00e9: <\/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-radiale-dacceleration-centripete-normale.png\" alt=\"f\u00f3rmula para acelera\u00e7\u00e3o centr\u00edpeta, acelera\u00e7\u00e3o normal ou acelera\u00e7\u00e3o radial\" class=\"wp-image-7436\" width=\"255\" height=\"205\" srcset=\"https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/formule-radiale-dacceleration-centripete-normale-300x242.png 300w, https:\/\/physigeek.com\/wp-content\/uploads\/2023\/09\/formule-radiale-dacceleration-centripete-normale.png 489w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\"><\/figure>\n<p style=\"margin-bottom:5px\"> Ouro: <\/p>\n<ul style=\"color:#4fd12f; font-weight: bold;\">\n<li style=\"margin-bottom:5px\"><span style=\"color:#101010;font-weight: normal;\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-34507a55d19314330bf60a03e52dc3b1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a_c\" title=\"Rendered by QuickLaTeX.com\" height=\"11\" width=\"15\" style=\"vertical-align: -3px;\"><\/p>\n<p> \u00e9 a acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal). <\/span><\/li>\n<li style=\"margin-bottom:5px\"><span style=\"color:#101010;font-weight: normal;\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-796872219106704832bd95ce08640b7b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"v\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"9\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e9 a <a href=\"https:\/\/physigeek.com\/pt\/velocidade-tangencial\/\">velocidade tangencial<\/a> . <\/span><\/li>\n<li style=\"margin-bottom:5px\"><span style=\"color:#101010;font-weight: normal;\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-01bcf7e9e043561da78fecf715c8a46e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"r\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e9 o raio da trajet\u00f3ria do movimento circular. <\/span><\/li>\n<li style=\"margin-bottom:5px\"><span style=\"color:#101010;font-weight: normal;\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-fbffdce91996e0a17795d82e8e6996d9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\omega\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"11\" style=\"vertical-align: 0px;\"><\/p>\n<p> \u00e9 a <a href=\"https:\/\/physigeek.com\/pt\/velocidade-angular\/\">velocidade angular<\/a> .<\/span><\/li>\n<\/ul>\n<p> A acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal) \u00e9 expressa em unidades de comprimento divididas por unidades de tempo ao quadrado. Portanto, a unidade de acelera\u00e7\u00e3o centr\u00edpeta no Sistema Internacional (SI) \u00e9 o metro dividido por segundo ao quadrado (m\/s <sup>2<\/sup> ). <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ejemplo-del-calculo-de-la-aceleracion-centripeta\"><\/span> Exemplo de c\u00e1lculo da acelera\u00e7\u00e3o centr\u00edpeta<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Agora que sabemos a defini\u00e7\u00e3o de acelera\u00e7\u00e3o centr\u00edpeta e qual \u00e9 sua f\u00f3rmula, vamos ver um exemplo concreto de como esse tipo de acelera\u00e7\u00e3o \u00e9 calculado.<\/p>\n<ul>\n<li> Um m\u00f3bile descreve um movimento circular uniforme com velocidade angular de 2 rad\/s e raio de curvatura de 6 m. Qual \u00e9 a acelera\u00e7\u00e3o centr\u00edpeta do celular?<\/li>\n<\/ul>\n<p> Para encontrar a acelera\u00e7\u00e3o centr\u00edpeta, precisamos usar a f\u00f3rmula explicada na se\u00e7\u00e3o acima:<\/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-5063688c5d14d4c463c2c7c833ca7b83_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a_c=\\omega^2 \\cdot r\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"80\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p> Ent\u00e3o, inserimos os dados na f\u00f3rmula e calculamos a acelera\u00e7\u00e3o centr\u00edpeta: <\/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-d25e608ee64f8e534b8a228585414973_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a_c=2^2 \\cdot 6=24\\ \\cfrac{m}{s^2}\" title=\"Rendered by QuickLaTeX.com\" height=\"34\" width=\"144\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Aceleracion-centripeta-y-aceleracion-tangencial\"><\/span> acelera\u00e7\u00e3o centr\u00edpeta e acelera\u00e7\u00e3o tangencial<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Nesta se\u00e7\u00e3o veremos a diferen\u00e7a entre acelera\u00e7\u00e3o centr\u00edpeta e acelera\u00e7\u00e3o tangencial, pois s\u00e3o os dois componentes intr\u00ednsecos da acelera\u00e7\u00e3o de um corpo que realiza movimento circular.<\/p>\n<p> <strong>A acelera\u00e7\u00e3o tangencial<\/strong> \u00e9 a acelera\u00e7\u00e3o tangente \u00e0 trajet\u00f3ria de um movimento circular e \u00e9 a causa da varia\u00e7\u00e3o na velocidade tangencial de um corpo realizando um movimento circular.<\/p>\n<p> A <strong>diferen\u00e7a entre acelera\u00e7\u00e3o centr\u00edpeta e acelera\u00e7\u00e3o tangencial<\/strong> \u00e9 que a acelera\u00e7\u00e3o centr\u00edpeta altera a dire\u00e7\u00e3o da velocidade do corpo em movimento que descreve um movimento circular, enquanto a acelera\u00e7\u00e3o tangencial altera a magnitude da velocidade em movimento. .<\/p>\n<p> Al\u00e9m disso, a acelera\u00e7\u00e3o tangencial \u00e9 tangente \u00e0 trajet\u00f3ria circular, por\u00e9m a acelera\u00e7\u00e3o centr\u00edpeta aponta para o centro da trajet\u00f3ria circular. A acelera\u00e7\u00e3o centr\u00edpeta e a acelera\u00e7\u00e3o tangencial s\u00e3o, portanto, perpendiculares.<\/p>\n<p> Lembre-se que no movimento circular uniforme o m\u00f3bile possui acelera\u00e7\u00e3o centr\u00edpeta, pois muda de dire\u00e7\u00e3o, por\u00e9m, n\u00e3o possui acelera\u00e7\u00e3o tangencial, pois a velocidade angular \u00e9 constante e portanto a amplitude da velocidade tangencial tamb\u00e9m \u00e9 constante. <\/p>\n<div style=\"background-color:#FFFDE7; padding-top: 10px; padding-bottom: 10px; padding-right: 10px; padding-left: 20px; border: 2.5px dashed #FFB74D; border-radius:20px;\"> <span style=\"color:#ff951b\">\u27a4<\/span> <strong>Veja:<\/strong> <a href=\"https:\/\/physigeek.com\/pt\/aceleracao-tangencial-ou-aceleracao-linear\/\">Acelera\u00e7\u00e3o tangencial (ou acelera\u00e7\u00e3o linear)<\/a> <\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Aceleracion-centripeta-y-fuerza-centripeta\"><\/span> Acelera\u00e7\u00e3o centr\u00edpeta e for\u00e7a centr\u00edpeta<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> <strong>A for\u00e7a centr\u00edpeta<\/strong> \u00e9 a for\u00e7a que atua sobre um corpo que segue um movimento circular e \u00e9 direcionado para o centro da trajet\u00f3ria circular. A for\u00e7a centr\u00edpeta \u00e9, portanto, a for\u00e7a que faz com que o corpo mude de dire\u00e7\u00e3o e descreve um movimento curvil\u00edneo.<\/p>\n<p> A for\u00e7a centr\u00edpeta \u00e9 calculada a partir da acelera\u00e7\u00e3o centr\u00edpeta, mais precisamente, o m\u00f3dulo da for\u00e7a centr\u00edpeta \u00e9 equivalente \u00e0 acelera\u00e7\u00e3o centr\u00edpeta multiplicada pela massa do corpo em movimento.<\/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-06c7fce326202d1347eb5ab34294aedf_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_c=m\\cdot a_c\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"85\" style=\"vertical-align: -3px;\"><\/p>\n<\/p>\n<p style=\"margin-bottom:5px\"> Ouro: <\/p>\n<ul style=\"color:#4fd12f; font-weight: bold;\">\n<li style=\"margin-bottom:5px\"><span style=\"color:#101010;font-weight: normal;\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-b7e95e71f7ef52482db0a2a51d4643fb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"F_c\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"17\" style=\"vertical-align: -3px;\"><\/p>\n<p> \u00e9 a for\u00e7a centr\u00edpeta. <\/span><\/li>\n<li style=\"margin-bottom:5px\"><span style=\"color:#101010;font-weight: normal;\">\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 do corpo seguindo um movimento circular. <\/span><\/li>\n<li style=\"margin-bottom:5px\"><span style=\"color:#101010;font-weight: normal;\">\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/physigeek.com\/wp-content\/ql-cache\/quicklatex.com-34507a55d19314330bf60a03e52dc3b1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a_c\" title=\"Rendered by QuickLaTeX.com\" height=\"11\" width=\"15\" style=\"vertical-align: -3px;\"><\/p>\n<p> \u00e9 a acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal).<\/span><\/li>\n<\/ul>\n<p> O vetor de for\u00e7a centr\u00edpeta tem a mesma dire\u00e7\u00e3o e dire\u00e7\u00e3o que o vetor de acelera\u00e7\u00e3o centr\u00edpeta, portanto sua dire\u00e7\u00e3o \u00e9 perpendicular \u00e0 velocidade tangencial e sua dire\u00e7\u00e3o \u00e9 em dire\u00e7\u00e3o ao centro da trajet\u00f3ria circular. <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Aceleracion-centripeta-y-aceleracion-centrifuga\"><\/span> acelera\u00e7\u00e3o centr\u00edpeta e acelera\u00e7\u00e3o centr\u00edfuga<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p> Por fim, veremos como a acelera\u00e7\u00e3o centr\u00edpeta difere da acelera\u00e7\u00e3o centr\u00edfuga, uma vez que muitas vezes s\u00e3o confundidas e s\u00e3o dois tipos diferentes de acelera\u00e7\u00f5es.<\/p>\n<p> <strong>A acelera\u00e7\u00e3o centr\u00edfuga<\/strong> \u00e9 uma acelera\u00e7\u00e3o fict\u00edcia que aparece ao estudar o movimento de um corpo a partir de um sistema de refer\u00eancia rotativo.<\/p>\n<p> A <strong>diferen\u00e7a entre acelera\u00e7\u00e3o centr\u00edpeta e acelera\u00e7\u00e3o centr\u00edfuga<\/strong> \u00e9 que a acelera\u00e7\u00e3o centr\u00edpeta \u00e9 uma acelera\u00e7\u00e3o real que ocorre quando um corpo faz um movimento circular, enquanto a acelera\u00e7\u00e3o centr\u00edfuga \u00e9 uma acelera\u00e7\u00e3o fict\u00edcia usada em sistemas de refer\u00eancia em rota\u00e7\u00e3o.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Este artigo explica o que \u00e9 acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal) na f\u00edsica. Da mesma forma, voc\u00ea descobrir\u00e1 como calcular a acelera\u00e7\u00e3o centr\u00edpeta, bem como um exerc\u00edcio resolvido para entender melhor o conceito. O que \u00e9 acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal)? A acelera\u00e7\u00e3o centr\u00edpeta , tamb\u00e9m chamada de acelera\u00e7\u00e3o normal ou acelera\u00e7\u00e3o radial , \u00e9 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/physigeek.com\/pt\/aceleracao-centripeta-ou-aceleracao-normal\/\"> <span class=\"screen-reader-text\">Acelera\u00e7\u00e3o centr\u00edpeta (ou acelera\u00e7\u00e3o normal)<\/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":[3],"tags":[],"class_list":["post-397","post","type-post","status-publish","format-standard","hentry","category-cinematografico"],"yoast_head":"<!-- This site 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