{"id":169845,"date":"2016-01-13T03:00:00","date_gmt":"2016-01-13T00:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=9bf7f9f84b2bd720ad9f77e094861a49"},"modified":"2016-01-13T03:00:00","modified_gmt":"2016-01-13T00:00:00","slug":"how-to-determine-the-centre-of-mass-of-bodies-from-image-modelling","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=169845","title":{"rendered":"How to determine the centre of mass of bodies from image modelling"},"content":{"rendered":"<p>Image modelling is a recent technique in physics education that includes digital tools for image<br \/>\ntreatment and analysis, such as digital stroboscopic photography (DSP) and video analysis software.<br \/>\nIt is commonly used to analyse the motion of objects. In this work we show how to determine the<br \/>\nposition of the centre of mass (CM) of objects with either isotropic or anisotropic mass density, by<br \/>\nvideo analyses as a video based experimental activity (VBEA). Strobe imaging is also presented in an<br \/>\neducational view, helping students to visualize the complex motion of a rigid body with<br \/>\nheterogeneous structure. As an example, we present a hammer tossed with translation and rotation.<br \/>\nThe technique shown here is valid for almost any kind of objects and it is very useful to work with<br \/>\nthe concept of CM.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Image modelling is a recent technique in physics education that includes digital tools for image<br \/>\ntreatment and analysis, such as digital stroboscopic photography (DSP) and video analysis software.<br \/>\nIt is commonly used to analyse the motion of objects&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-169845","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/169845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=169845"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/169845\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=169845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=169845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=169845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}