{"id":135666,"date":"2015-10-23T02:00:00","date_gmt":"2015-10-22T23:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=9e87f1c6625773f2a2c1baac2d3e89e6"},"modified":"2015-10-23T02:00:00","modified_gmt":"2015-10-22T23:00:00","slug":"why-low-bounce-balls-exhibit-high-rolling-resistance","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=135666","title":{"rendered":"Why low bounce balls exhibit high rolling resistance"},"content":{"rendered":"<p>A simple experiment is described to measure the coefficient of rolling friction for a low bounce<br \/>\nball rolling on a horizontal surface. As observed previously by others, the coefficient increased<br \/>\nwith rolling speed. The energy loss due to rolling friction can be explained in terms of the<br \/>\nmeasured coefficient of restitution for the ball, meaning that low bounce balls have a higher<br \/>\ncoefficient of rolling friction than high bounce balls.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A simple experiment is described to measure the coefficient of rolling friction for a low bounce<br \/>\nball rolling on a horizontal surface. As observed previously by others, the coefficient increased<br \/>\nwith rolling speed. The energy loss due to rolling fric&#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-135666","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\/135666","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=135666"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/135666\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=135666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=135666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=135666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}