{"appState":{"pageLoadApiCallsStatus":true},"articleState":{"article":{"headers":{"creationTime":"2016-03-26T07:42:28+00:00","modifiedTime":"2016-03-26T07:42:28+00:00","timestamp":"2022-09-14T17:51:25+00:00"},"data":{"breadcrumbs":[{"name":"Academics & The Arts","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33662"},"slug":"academics-the-arts","categoryId":33662},{"name":"Science","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33756"},"slug":"science","categoryId":33756},{"name":"Physics","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33769"},"slug":"physics","categoryId":33769}],"title":"Moments of Inertia in Physics","strippedTitle":"moments of inertia in physics","slug":"moments-of-inertia-in-physics","canonicalUrl":"","seo":{"metaDescription":"In physics, the moment of inertia measures how resistant an object is to changes in its rotational motion about a particular axis. Here are some of the most com","noIndex":0,"noFollow":0},"content":"<p>In physics, the moment of inertia measures how resistant an object is to changes in its rotational motion about a particular axis. Here are some of the most common moments of inertia:</p>\n<ul class=\"level-one\">\n <li><p class=\"first-para\">Solid cylinder or disk of radius <i>r</i> rotating about its axis of symmetry:</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479241.image0.png\" height=\"40\" alt=\"image0.png\" width=\"68\"/>\n </li>\n <li><p class=\"first-para\">Hollow cylinder of radius <i>r</i> rotating about its axis of symmetry<i>:</i></p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479242.image1.png\" height=\"17\" alt=\"image1.png\" width=\"53\"/>\n </li>\n <li><p class=\"first-para\">Solid sphere of radius <i>r</i> rotating about its center<i>:</i></p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479243.image2.png\" height=\"40\" alt=\"image2.png\" width=\"68\"/>\n </li>\n <li><p class=\"first-para\">Hollow sphere of radius <i>r</i> rotating about its center<i>:</i></p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479244.image3.png\" height=\"40\" alt=\"image3.png\" width=\"68\"/>\n </li>\n <li><p class=\"first-para\">Thin rod of length <i>r</i> rotating about its middle:</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479245.image4.png\" height=\"40\" alt=\"image4.png\" width=\"76\"/>\n </li>\n <li><p class=\"first-para\">Thin rod of length <i>r</i> rotating about one end:</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479246.image5.png\" height=\"40\" alt=\"image5.png\" width=\"68\"/>\n </li>\n</ul>","description":"<p>In physics, the moment of inertia measures how resistant an object is to changes in its rotational motion about a particular axis. Here are some of the most common moments of inertia:</p>\n<ul class=\"level-one\">\n <li><p class=\"first-para\">Solid cylinder or disk of radius <i>r</i> rotating about its axis of symmetry:</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479241.image0.png\" height=\"40\" alt=\"image0.png\" width=\"68\"/>\n </li>\n <li><p class=\"first-para\">Hollow cylinder of radius <i>r</i> rotating about its axis of symmetry<i>:</i></p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479242.image1.png\" height=\"17\" alt=\"image1.png\" width=\"53\"/>\n </li>\n <li><p class=\"first-para\">Solid sphere of radius <i>r</i> rotating about its center<i>:</i></p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479243.image2.png\" height=\"40\" alt=\"image2.png\" width=\"68\"/>\n </li>\n <li><p class=\"first-para\">Hollow sphere of radius <i>r</i> rotating about its center<i>:</i></p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479244.image3.png\" height=\"40\" alt=\"image3.png\" width=\"68\"/>\n </li>\n <li><p class=\"first-para\">Thin rod of length <i>r</i> rotating about its middle:</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479245.image4.png\" height=\"40\" alt=\"image4.png\" width=\"76\"/>\n </li>\n <li><p class=\"first-para\">Thin rod of length <i>r</i> rotating about one end:</p>\n<img src=\"https://www.dummies.com/wp-content/uploads/479246.image5.png\" height=\"40\" alt=\"image5.png\" width=\"68\"/>\n </li>\n</ul>","blurb":"","authors":[{"authorId":8967,"name":"Steven Holzner","slug":"steven-holzner","description":" <p><b> Dr. Steven Holzner</b> has written more than 40 books about physics and programming. He was a contributing editor at <i>PC Magazine</i> and was on the faculty at both MIT and Cornell. He has authored Dummies titles including <i>Physics For Dummies</i> and <i>Physics Essentials For Dummies.</i> Dr. Holzner received his PhD at Cornell.</p> ","hasArticle":false,"_links":{"self":"https://dummies-api.dummies.com/v2/authors/8967"}},{"authorId":8968,"name":"Daniel Funch Wohns","slug":"daniel-funch-wohns","description":"","hasArticle":false,"_links":{"self":"https://dummies-api.dummies.com/v2/authors/8968"}}],"primaryCategoryTaxonomy":{"categoryId":33769,"title":"Physics","slug":"physics","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33769"}},"secondaryCategoryTaxonomy":{"categoryId":0,"title":null,"slug":null,"_links":null},"tertiaryCategoryTaxonomy":{"categoryId":0,"title":null,"slug":null,"_links":null},"trendingArticles":[{"articleId":175788,"title":"Trig Identities for Pre-Calculus","slug":"trig-identities-for-pre-calculus","categoryList":["academics-the-arts","math","pre-calculus"],"_links":{"self":"/articles/175788"}},{"articleId":147241,"title":"How to Use the Z-Table","slug":"how-to-use-the-z-table","categoryList":["academics-the-arts","math","statistics"],"_links":{"self":"/articles/147241"}},{"articleId":192609,"title":"How to Pray the Rosary: A Comprehensive Guide","slug":"how-to-pray-the-rosary","categoryList":["body-mind-spirit","religion-spirituality","christianity","catholicism"],"_links":{"self":"/articles/192609"}},{"articleId":232914,"title":"The Flop, Turn, and River Cards in Texas Hold'em","slug":"flop-turn-river-cards-texas-holdem","categoryList":["home-auto-hobbies","games","card-games","poker"],"_links":{"self":"/articles/232914"}},{"articleId":193770,"title":"How to Play Rummy: All You Need to Know","slug":"rummy-understanding-the-rules-and-starting-a-game","categoryList":["home-auto-hobbies","games","card-games","general-card-games"],"_links":{"self":"/articles/193770"}}],"inThisArticle":[],"relatedArticles":{"fromBook":[],"fromCategory":[{"articleId":209405,"title":"String Theory For Dummies Cheat Sheet","slug":"string-theory-for-dummies-cheat-sheet","categoryList":["academics-the-arts","science","physics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/209405"}},{"articleId":209012,"title":"Physics II For Dummies Cheat Sheet","slug":"physics-ii-for-dummies-cheat-sheet","categoryList":["academics-the-arts","science","physics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/209012"}},{"articleId":208592,"title":"Thermodynamics For Dummies Cheat Sheet","slug":"thermodynamics-for-dummies-cheat-sheet","categoryList":["academics-the-arts","science","physics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/208592"}},{"articleId":208578,"title":"Optics For Dummies Cheat Sheet","slug":"optics-for-dummies-cheat-sheet","categoryList":["academics-the-arts","science","physics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/208578"}},{"articleId":208460,"title":"Physics I For Dummies Cheat Sheet","slug":"physics-i-for-dummies-cheat-sheet","categoryList":["academics-the-arts","science","physics"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/208460"}}]},"hasRelatedBookFromSearch":true,"relatedBook":{"bookId":282468,"slug":"physics-i-practice-problems-for-dummies","isbn":"9781119883715","categoryList":["academics-the-arts","science","physics"],"amazon":{"default":"https://www.amazon.com/gp/product/1119883717/ref=as_li_tl?ie=UTF8&tag=wiley01-20","ca":"https://www.amazon.ca/gp/product/1119883717/ref=as_li_tl?ie=UTF8&tag=wiley01-20","indigo_ca":"http://www.tkqlhce.com/click-9208661-13710633?url=https://www.chapters.indigo.ca/en-ca/books/product/1119883717-item.html&cjsku=978111945484","gb":"https://www.amazon.co.uk/gp/product/1119883717/ref=as_li_tl?ie=UTF8&tag=wiley01-20","de":"https://www.amazon.de/gp/product/1119883717/ref=as_li_tl?ie=UTF8&tag=wiley01-20"},"image":{"src":"https://www.dummies.com/covers/9781119883715.jpg","width":250,"height":350},"title":"Physics I: 501 Practice Problems For Dummies (+ Free Online Practice)","testBankPinActivationLink":"","bookOutOfPrint":true,"authorsInfo":"\n <p><p><b>Dr. Jill Schiefelbein</b> taught business communication at Arizona State University for 11 years before venturing into entrepreneurship. 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Moments of Inertia in Physics

By: Steven Holzner and Daniel Funch Wohns and

Updated: 03-26-2016

Physics I: 501 Practice Problems For Dummies (+ Free Online Practice)

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In physics, the moment of inertia measures how resistant an object is to changes in its rotational motion about a particular axis. Here are some of the most common moments of inertia: