{"id":321690,"date":"2016-11-21T03:00:00","date_gmt":"2016-11-21T00:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=79459953d5ddb5d63f813ff037f35d63"},"modified":"2016-11-21T03:00:00","modified_gmt":"2016-11-21T00:00:00","slug":"the-centre-of-mass-of-a-flying-body-revealed-by-a-computational-model","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=321690","title":{"rendered":"The centre of mass of a \u2018flying\u2019 body revealed by a computational model"},"content":{"rendered":"<p>The interpretation of complex trajectories of rigid bodies by the identification of their centre of<br \/>\nmass (CM), has a large potential for improving the understanding of the concept of CM at college and<br \/>\nuniversity level. Therefore, it is not surprising that there are several techniques described in the<br \/>\nliterature concerning how to identify the CM of rigid bodies. However, these techniques fail when<br \/>\nthe CM\u2019s position in the body\u2019s frame of reference changes when the body is at motion. In this work<br \/>\nwe present a computational model that allows the identification of the CM with very good accuracy,<br \/>\neither when the CM\u2019s position changes or is fixed in the body\u2019s frame of reference. This model can<br \/>\nbe used for a system of bodies moving in a plane, for which the CM of each body coincides with its<br \/>\ngeometric centre. The effectiveness of this model is tested with experiments using video acquisition<br \/>\nand numerical analysis, and can be done in experimental classes under controlled conditions. St&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The interpretation of complex trajectories of rigid bodies by the identification of their centre of<br \/>\nmass (CM), has a large potential for improving the understanding of the concept of CM at college and<br \/>\nuniversity level. Therefore, it is not surprising&#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-321690","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\/321690","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=321690"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/321690\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=321690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=321690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=321690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}