{"id":20789,"date":"2020-06-01T00:01:49","date_gmt":"2020-06-01T03:01:49","guid":{"rendered":"https:\/\/www.ufrgs.br\/amlef\/?p=20789"},"modified":"2020-08-01T21:18:28","modified_gmt":"2020-08-02T00:18:28","slug":"o-giroscopio-e-a-conservacao-de-momento-angular","status":"publish","type":"post","link":"https:\/\/www.ufrgs.br\/amlef\/2020\/06\/01\/o-giroscopio-e-a-conservacao-de-momento-angular\/","title":{"rendered":"O Girosc\u00f3pio e a conserva\u00e7\u00e3o de Momento Angular"},"content":{"rendered":"\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\" style=\"grid-template-columns:30% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"468\" height=\"1024\" src=\"https:\/\/www.ufrgs.br\/amlef\/wp-content\/uploads\/2018\/09\/AMLEF291_1-468x1024.jpg\" alt class=\"wp-image-11617\" srcset=\"https:\/\/www.ufrgs.br\/amlef\/wp-content\/uploads\/2018\/09\/AMLEF291_1-468x1024.jpg 468w, https:\/\/www.ufrgs.br\/amlef\/wp-content\/uploads\/2018\/09\/AMLEF291_1-137x300.jpg 137w, https:\/\/www.ufrgs.br\/amlef\/wp-content\/uploads\/2018\/09\/AMLEF291_1-768x1681.jpg 768w, https:\/\/www.ufrgs.br\/amlef\/wp-content\/uploads\/2018\/09\/AMLEF291_1-205x449.jpg 205w, https:\/\/www.ufrgs.br\/amlef\/wp-content\/uploads\/2018\/09\/AMLEF291_1.jpg 1199w\" sizes=\"auto, (max-width: 468px) 100vw, 468px\"><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\">O Momento Angular, tamb\u00e9m chamado Momen\u00adtum Angular ou Quan\u00adti\u00addade de Movi\u00admento Angular, \u00e9 uma das gran\u00adde\u00adzas con\u00adser\u00adva\u00addas na natu\u00adreza como efeito da in\u00e9rcia. Isso sig\u00adni\u00adfica que um objeto que est\u00e1 girando tende a manter seu giro, bem como um objeto que est\u00e1 em movi\u00admento tende a con\u00adti\u00adnuar se movendo.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> O Giros\u00adc\u00f3\u00adpio \u00e9 um dis\u00adpo\u00adsi\u00adtivo uti\u00adli\u00adzado no ensino de f\u00edsica para demons\u00adtrar a con\u00adser\u00adva\u00ad\u00e7\u00e3o do Momento Angular. O dis\u00adpo\u00adsi\u00adtivo \u00e9 com\u00adposto por um volante, ou rotor, preso a um eixo com ao menos um grau de liber\u00addade de rota\u00e7\u00e3o. No caso do objeto exposto, o volante possui tr\u00eas graus de liber\u00addade, ou seja, ap\u00f3s colo\u00adcado em rota\u00e7\u00e3o, ele fica est\u00e1vel inde\u00adpen\u00adden\u00adte\u00admente do movi\u00admento do suporte.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/www.ufrgs.br\/amlef\/wp-content\/uploads\/2020\/05\/Gyroscope_operation.gif\" alt class=\"wp-image-20790\"><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\">O GIF \u00e0 direita demons\u00adtra o fun\u00adci\u00ado\u00adna\u00admento de um giros\u00adc\u00f3\u00adpio. Este GIF, reti\u00adrado da <a href=\"https:\/\/en.wikipedia.org\/wiki\/Gyroscope\">Wiki\u00adpe\u00addia<\/a>, foi criado por Lucas Vieira e \u00e9 regis\u00adtrado como dom\u00ednio p\u00fablico.<\/p>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">O movi\u00admento de rota\u00e7\u00e3o apre\u00adsenta algumas par\u00adti\u00adcu\u00adla\u00adri\u00adda\u00addes. Uma roda de bici\u00adcleta sus\u00adpensa somente em uma das extre\u00admi\u00adda\u00addes do seu eixo, quando n\u00e3o est\u00e1 girando, tomba ime\u00addi\u00ada\u00adta\u00admente. No entanto, se ela estiver girando, o movi\u00admento rea\u00adli\u00adzado \u00e9 a PRECESS\u00c3O.&nbsp;O v\u00eddeo abaixo, criado pela USP, demons\u00adtra melhor esse efeito inte\u00adres\u00adsante da mec\u00e2\u00adnica de corpos em movi\u00admento cir\u00adcu\u00adlar, o movi\u00admento de precess\u00e3o.<\/p>\n\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Tema 08 - Alguns Movimentos do Corpo R\u00edgido | Experimentos - Roda de bicicleta: precess\u00e3o\" width=\"1400\" height=\"788\" src=\"https:\/\/www.youtube.com\/embed\/2iaQk4j6NRU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">O movi\u00admento de rota\u00e7\u00e3o pode ser obser\u00advado e explo\u00adrado para fins did\u00e1\u00adti\u00adcos em brin\u00adque\u00addos como o pi\u00e3o e o spinner. Outras curi\u00ado\u00adsi\u00adda\u00addes inte\u00adres\u00adsan\u00adtes sobre o Momento Angular s\u00e3o res\u00adpon\u00addi\u00addas em posts do Centro de Refe\u00adr\u00ean\u00adcia para o Ensino de F\u00edsica (CREF) do Ins\u00adti\u00adtuto de F\u00edsica da UFRGS. No site, h\u00e1 uma res\u00adposta sobre o <a href=\"https:\/\/www.if.ufrgs.br\/novocref\/?contact-pergunta=bola-de-basquete-girando-apoiada-no-dedo\">equi\u00adl\u00ed\u00adbrio de uma bola de bas\u00adquete sobre o dedo<\/a> e outra sobre a <a href=\"https:\/\/www.if.ufrgs.br\/novocref\/?contact-pergunta=precessao-dos-equinocios-e-as-estacoes-do-ano\">pre\u00adces\u00ads\u00e3o da Terra e as esta\u00ad\u00e7\u00f5es do ano<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\">\n\n\n\n<h2 class=\"wp-block-heading\"><strong>A hist\u00f3ria dos girosc\u00f3pios e seu uso&nbsp;atual<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A his\u00adt\u00f3\u00adria do giros\u00adc\u00f3\u00adpio remonta sua origem no pi\u00e3o, brin\u00adquedo infan\u00adtil desen\u00advol\u00advido em diver\u00adsas civi\u00adli\u00adza\u00ad\u00e7\u00f5es antigas. O pri\u00admeiro regis\u00adtro do uso de um algo similar a um giros\u00adc\u00f3\u00adpio com ins\u00adtru\u00admento de medida \u00e9 o Espelho de Serson, em 1743, um ins\u00adtru\u00admento de nave\u00adga\u00ad\u00e7\u00e3o uti\u00adli\u00adzado para definir o hori\u00adzonte em dias nubla\u00addos. A partir de 1817 foram criados giros\u00adc\u00f3\u00adpios com esferas ou discos, uti\u00adli\u00adza\u00addos pri\u00adma\u00adri\u00ada\u00admente como fer\u00adra\u00admen\u00adtas de ensino. Em 1852, L\u00e9on Fou\u00adcault cunhou o nome giros\u00adc\u00f3\u00adpio e uti\u00adli\u00adzou o ins\u00adtru\u00admento para medir a rota\u00e7\u00e3o da&nbsp;Terra.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A partir da cria\u00e7\u00e3o de motores el\u00e9\u00adtri\u00adcos, em 1860, foi pos\u00ads\u00ed\u00advel criar giros\u00adc\u00f3\u00adpios que giras\u00adsem inde\u00adfi\u00adni\u00adda\u00admente. Esta ino\u00adva\u00ad\u00e7\u00e3o pos\u00adsi\u00adbi\u00adli\u00adtou o uso de giros\u00adc\u00f3\u00adpios como fer\u00adra\u00admen\u00adtas de medida de dire\u00e7\u00e3o para barcos e ve\u00ed\u00adcu\u00adlos, com a cria\u00e7\u00e3o da pri\u00admeira b\u00fassola giros\u00adc\u00f3\u00adpica em&nbsp;1904.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Durante o S\u00e9culo XX, foram desen\u00advol\u00advi\u00addas tec\u00adno\u00adlo\u00adgias de medida de ace\u00adle\u00adra\u00ad\u00e7\u00e3o e sis\u00adte\u00admas de nave\u00adga\u00ad\u00e7\u00e3o iner\u00adcial base\u00ada\u00addas no uso de giros\u00adc\u00f3\u00adpios, per\u00admi\u00adtindo a cria\u00e7\u00e3o de m\u00edsseis bal\u00eds\u00adti\u00adcos. Durante a Segunda Guerra Mundial, os giros\u00adc\u00f3\u00adpios tamb\u00e9m foram uti\u00adli\u00adza\u00addos para esta\u00adbi\u00adli\u00adzar armas de avi\u00f5es e bate\u00adrias antia\u00e9reas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Atu\u00adal\u00admente, ainda h\u00e1 muitos usos para os giros\u00adc\u00f3\u00adpios. Com as tec\u00adno\u00adlo\u00adgias de mini\u00ada\u00adtu\u00adri\u00adza\u00ad\u00e7\u00e3o, foi pos\u00ads\u00ed\u00advel intro\u00addu\u00adzir o giros\u00adc\u00f3\u00adpio como ace\u00adler\u00f4\u00adme\u00adtro em qual\u00adquer dis\u00adpo\u00adsi\u00adtivo digital, como rel\u00f3\u00adgios, celu\u00adla\u00adres e vide\u00ado\u00adga\u00admes. A pro\u00adpri\u00ade\u00addade de esta\u00adbi\u00adli\u00adza\u00ad\u00e7\u00e3o dos giros\u00adc\u00f3\u00adpios possui muitos usos, inclu\u00adsive para o cinema nas c\u00e2meras esta\u00adbi\u00adli\u00adza\u00addas. Os giros\u00adc\u00f3\u00adpios ainda s\u00e3o uti\u00adli\u00adza\u00addos como ins\u00adtru\u00admen\u00adtos de medida de dire\u00e7\u00e3o e geo\u00adlo\u00adca\u00adli\u00adza\u00ad\u00e7\u00e3o, entre outros.<\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\"> Pes\u00adquisa: Gabriel Cury Perrone; F\u00edsico UFRGS \/ Maio&nbsp;2020&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link\" href=\"https:\/\/www.ufrgs.br\/amlef\/amlef\/amlef291-giroscopio-maquina-de-bohnenberger\/\">+ infor\u00adma\u00ad\u00e7\u00f5es<\/a><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>O Momento Angular, tamb\u00e9m chamado Momen\u00adtum Angular ou Quan\u00adti\u00addade de Movi\u00admento Angular, \u00e9 uma das gran\u00adde\u00adzas con\u00adser\u00adva\u00addas na natu\u00adreza como efeito da in\u00e9rcia. Isso sig\u00adni\u00adfica que um objeto que est\u00e1 girando tende a manter seu giro, bem como um objeto que est\u00e1 em movi\u00admento tende a con\u00adti\u00adnuar se movendo.&nbsp; O Giros\u00adc\u00f3\u00adpio \u00e9 um dis\u00adpo\u00adsi\u00adtivo utilizado&nbsp;[\u2026]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","wp_typography_post_enhancements_disabled":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[432],"tags":[508],"class_list":["post-20789","post","type-post","status-publish","format-standard","hentry","category-destaques","tag-mecanica"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O Girosc\u00f3pio e a conserva\u00e7\u00e3o de Momento Angular - Museu dos Laborat\u00f3rios de Ensino de F\u00edsica - Em Transi\u00e7\u00e3o<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ufrgs.br\/amlef\/2020\/06\/01\/o-giroscopio-e-a-conservacao-de-momento-angular\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"O Girosc\u00f3pio e a conserva\u00e7\u00e3o de Momento Angular - Museu dos Laborat\u00f3rios de Ensino de F\u00edsica - Em Transi\u00e7\u00e3o\" \/>\n<meta property=\"og:description\" content=\"O Momento Angular, tamb\u00e9m chamado Momen\u00adtum Angular ou Quan\u00adti\u00addade de Movi\u00admento Angular, \u00e9 uma das gran\u00adde\u00adzas con\u00adser\u00adva\u00addas na natu\u00adreza como efeito da in\u00e9rcia. Isso sig\u00adni\u00adfica que um objeto que est\u00e1 girando tende a manter seu giro, bem como um objeto que est\u00e1 em movi\u00admento tende a con\u00adti\u00adnuar se movendo.&nbsp; O Giros\u00adc\u00f3\u00adpio \u00e9 um dis\u00adpo\u00adsi\u00adtivo uti\u00adli\u00adzado [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ufrgs.br\/amlef\/2020\/06\/01\/o-giroscopio-e-a-conservacao-de-momento-angular\/\" \/>\n<meta property=\"og:site_name\" content=\"Museu dos Laborat\u00f3rios de Ensino de F\u00edsica - Em Transi\u00e7\u00e3o\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/AMLEF.IF.UFRGS\" \/>\n<meta property=\"article:published_time\" content=\"2020-06-01T03:01:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-08-02T00:18:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ufrgs.br\/amlef\/wp-content\/uploads\/2018\/09\/AMLEF291_1-468x1024.jpg\" \/>\n<meta name=\"author\" content=\"Gabriel Cury Perrone\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Gabriel Cury Perrone\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.ufrgs.br\/amlef\/2020\/06\/01\/o-giroscopio-e-a-conservacao-de-momento-angular\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.ufrgs.br\/amlef\/2020\/06\/01\/o-giroscopio-e-a-conservacao-de-momento-angular\/\"},\"author\":{\"name\":\"Gabriel Cury Perrone\",\"@id\":\"https:\/\/www.ufrgs.br\/amlef\/#\/schema\/person\/d37d45b75942c3447facb58bbabe8a30\"},\"headline\":\"O Girosc\u00f3pio e a conserva\u00e7\u00e3o de Momento Angular\",\"datePublished\":\"2020-06-01T03:01:49+00:00\",\"dateModified\":\"2020-08-02T00:18:28+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.ufrgs.br\/amlef\/2020\/06\/01\/o-giroscopio-e-a-conservacao-de-momento-angular\/\"},\"wordCount\":610,\"commentCount\":1,\"publisher\":{\"@id\":\"https:\/\/www.ufrgs.br\/amlef\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.ufrgs.br\/amlef\/2020\/06\/01\/o-giroscopio-e-a-conservacao-de-momento-angular\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.ufrgs.br\/amlef\/wp-content\/uploads\/2018\/09\/AMLEF291_1-468x1024.jpg\",\"keywords\":[\"Mec\u00e2nica\"],\"articleSection\":[\"Destaques\"],\"inLanguage\":\"pt-BR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.ufrgs.br\/amlef\/2020\/06\/01\/o-giroscopio-e-a-conservacao-de-momento-angular\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.ufrgs.br\/amlef\/2020\/06\/01\/o-giroscopio-e-a-conservacao-de-momento-angular\/\",\"url\":\"https:\/\/www.ufrgs.br\/amlef\/2020\/06\/01\/o-giroscopio-e-a-conservacao-de-momento-angular\/\",\"name\":\"O Girosc\u00f3pio e a conserva\u00e7\u00e3o de Momento Angular - 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