{"id":160182,"date":"2022-09-26T10:00:48","date_gmt":"2022-09-26T10:00:48","guid":{"rendered":"\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/"},"modified":"2023-08-16T06:33:39","modified_gmt":"2023-08-16T06:33:39","slug":"faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/","title":{"rendered":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ?"},"content":{"rendered":"<p><strong>FAQ: Why is the mass moment of inertia reported in units of (length)^5 ?<\/strong><\/p>\n<p>By default, Discovery SpaceClaim does not assign a material to a new model.\u00a0 The lack of a material assignment also means there is no value specified for density, which makes it impossible to display the result using the typical units for the mass moment of inertia:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-157439\" src=\"\/knowledge\/wp-content\/uploads\/sites\/4\/2022\/08\/hg401.png\" alt=\" width=\"192\" height=\"37\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>The mass moment of inertia for a body can be calculated using the general equation<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/knowledge\/wp-content\/uploads\/sites\/4\/2022\/08\/hg402.png\" alt=\" width=\"132\" height=\"74\" \/><\/p>\n<p>where<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-157441\" src=\"\/knowledge\/wp-content\/uploads\/sites\/4\/2022\/08\/hg403.png\" alt=\" width=\"43\" height=\"44\" \/> is the material density, <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-157442\" src=\"\/knowledge\/wp-content\/uploads\/sites\/4\/2022\/08\/hg404.png\" alt=\" width=\"30\" height=\"39\" \/> is the distance from any given point within the body to the axis of revolution, and <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-157442\" src=\"\/knowledge\/wp-content\/uploads\/sites\/4\/2022\/08\/hg404.png\" alt=\" width=\"30\" height=\"39\" \/>\u00a0is the total volume of the body\u00a0in units of length\u00a0cubed.<\/p>\n<p>After integrating this general equation, we are left with the following terms and corresponding SI units, for example:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-157443\" src=\"\/knowledge\/wp-content\/uploads\/sites\/4\/2022\/08\/hg406.png\" alt=\" width=\"167\" height=\"105\" \/>\u00a0 <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-157444\" src=\"\/knowledge\/wp-content\/uploads\/sites\/4\/2022\/08\/hg407.png\" alt=\" width=\"379\" height=\"61\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>However, without an assigned density, the terms cannot be canceled and thus the result of the calculation is displayed as \u00a0.<\/p>\n<p>Users may also notice that the Mass Properties tool reports the Center of Volume of a part until a density is specified, at which point the label in\u00a0the\u00a0results changes to Center\u00a0of Mass.<\/p>\n","protected":false},"template":"","class_list":["post-160182","topic","type-topic","status-publish","hentry","topic-tag-spaceclaim-faq"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? By default, Discovery SpaceClaim does not assign a material to a new model. The lack of a material assignment also means there is no value specified for density, which makes it impossible to display the result using the typical units for\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Knowledge | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? By default, Discovery SpaceClaim does not assign a material to a new model. The lack of a material assignment also means there is no value specified for density, which makes it impossible to display the result using the typical units for\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2022-09-26T10:00:48+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-08-16T06:33:39+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? | Ansys Knowledge\" \/>\n\t\t<meta name=\"twitter:description\" content=\"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? By default, Discovery SpaceClaim does not assign a material to a new model. The lack of a material assignment also means there is no value specified for density, which makes it impossible to display the result using the typical units for\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/spaceclaim-faq\\\/#listItem\",\"name\":\"Spaceclaim-FAQ\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/spaceclaim-faq\\\/#listItem\",\"position\":3,\"name\":\"Spaceclaim-FAQ\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/spaceclaim-faq\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\\\/#listItem\",\"name\":\"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ?\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\\\/#listItem\",\"position\":4,\"name\":\"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ?\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/spaceclaim-faq\\\/#listItem\",\"name\":\"Spaceclaim-FAQ\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\\\/\",\"name\":\"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? | Ansys Knowledge\",\"description\":\"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? By default, Discovery SpaceClaim does not assign a material to a new model. The lack of a material assignment also means there is no value specified for density, which makes it impossible to display the result using the typical units for\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\\\/#breadcrumblist\"},\"datePublished\":\"2022-09-26T10:00:48+00:00\",\"dateModified\":\"2023-08-16T06:33:39+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? | Ansys Knowledge","description":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? By default, Discovery SpaceClaim does not assign a material to a new model. The lack of a material assignment also means there is no value specified for density, which makes it impossible to display the result using the typical units for","canonical_url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/knowledge","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","position":2,"name":"Topics","item":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/spaceclaim-faq\/#listItem","name":"Spaceclaim-FAQ"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/spaceclaim-faq\/#listItem","position":3,"name":"Spaceclaim-FAQ","item":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/spaceclaim-faq\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/#listItem","name":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ?"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/#listItem","position":4,"name":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ?","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/spaceclaim-faq\/#listItem","name":"Spaceclaim-FAQ"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#organization","name":"Ansys Knowledge","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/knowledge\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/#webpage","url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/","name":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? | Ansys Knowledge","description":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? By default, Discovery SpaceClaim does not assign a material to a new model. The lack of a material assignment also means there is no value specified for density, which makes it impossible to display the result using the typical units for","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/#breadcrumblist"},"datePublished":"2022-09-26T10:00:48+00:00","dateModified":"2023-08-16T06:33:39+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#website","url":"https:\/\/innovationspace.ansys.com\/knowledge\/","name":"Ansys Knowledge","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/knowledge\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Knowledge | Ansys Innovation Space","og:type":"article","og:title":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? | Ansys Knowledge","og:description":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? By default, Discovery SpaceClaim does not assign a material to a new model. The lack of a material assignment also means there is no value specified for density, which makes it impossible to display the result using the typical units for","og:url":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/","article:published_time":"2022-09-26T10:00:48+00:00","article:modified_time":"2023-08-16T06:33:39+00:00","twitter:card":"summary_large_image","twitter:title":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? | Ansys Knowledge","twitter:description":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ? By default, Discovery SpaceClaim does not assign a material to a new model. The lack of a material assignment also means there is no value specified for density, which makes it impossible to display the result using the typical units for"},"aioseo_meta_data":{"post_id":"160182","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2025-10-17 18:56:02","updated":"2026-07-29 05:13:33","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/spaceclaim-faq\/\" title=\"Spaceclaim-FAQ\">Spaceclaim-FAQ<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tFAQ: Why is the mass moment of inertia reported in units of (length)^5 ?\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/knowledge"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/knowledge\/topics\/"},{"label":"Spaceclaim-FAQ","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic-tag\/spaceclaim-faq\/"},{"label":"FAQ: Why is the mass moment of inertia reported in units of (length)^5 ?","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/faq-why-is-the-mass-moment-of-inertia-reported-in-units-of-length5\/"}],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["09-13-2022  20:20:25"],"_bbp_forum_id":["159552"],"_btv_view_count":["1068"],"family":[""],"application_name":[""],"product_version":[""],"_bbp_likes_count":["1"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/160182","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/160182\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=160182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}