{"id":360062,"date":"2017-02-03T03:00:00","date_gmt":"2017-02-03T00:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=f900f7db3762bd9f662c879c59a68c0e"},"modified":"2017-02-03T03:00:00","modified_gmt":"2017-02-03T00:00:00","slug":"coefficient-of-restitution-for-a-superelastic-collision","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=360062","title":{"rendered":"Coefficient of restitution for a superelastic collision"},"content":{"rendered":"<p>A simple experiment is described where the tip of a metal ruler is used to strike a 50\u00a0g mass. Since<br \/>\nthe ruler is very flexible, the impact duration is much longer than usual, giving the impression<br \/>\nthat the ruler simply pushes the mass forward at low speed over a long distance. The tip of the<br \/>\nruler remains in contact with the mass throughout the impact. However, the impact is best described<br \/>\nas a long duration collision with a coefficient of restitution (COR) greater than zero, despite the<br \/>\nfact that the relative speed during and at the end of the collision is zero. If the mass rests on a<br \/>\ntable and if the ruler strikes the table before striking the mass, then the ruler bends and stores<br \/>\nelastic energy. The result is a superelastic collision where the COR is greater than unity.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A simple experiment is described where the tip of a metal ruler is used to strike a 50\u00a0g mass. Since<br \/>\nthe ruler is very flexible, the impact duration is much longer than usual, giving the impression<br \/>\nthat the ruler simply pushes the mass forward at lo&#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-360062","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\/360062","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=360062"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/360062\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=360062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=360062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=360062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}