{"id":4417,"date":"2015-11-27T10:44:02","date_gmt":"2015-11-27T01:44:02","guid":{"rendered":"http:\/\/yoyorewind.com\/en\/?p=4417"},"modified":"2015-11-27T10:44:02","modified_gmt":"2015-11-27T01:44:02","slug":"science-off-the-sphere-episode-14-yo-yos-in-space","status":"publish","type":"post","link":"https:\/\/yoyorewind.com\/en\/news\/2015\/11\/27\/4417\/","title":{"rendered":"Science off the Sphere, Episode 14: Yo-Yos in Space!"},"content":{"rendered":"<p><iframe title=\"Science off the Sphere: Yo-Yos in Space\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/ni4j5K4Lz3o?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<blockquote><p>Challenge Question: How is Don&#8217;s &#8220;tether assist&#8221; like the tether technology used in satellites?<\/p>\n<p>Challenge Answer: Don&#8217;s yo-yo acts like an end-mass in a momentum exchange tether system. He spins thestring(tether), thus exerting a centripetal force on the yo-yo. Given that a 2-bodysystem will orbit around its center of mass and Don&#8217;s hand represents a satellite, the yo-yo and his hand will experience constant acceleration. Momentum exchange can occurif an end-mass is released during rotation. A transfer in momentum to the released masscauses the system to change orbital energy, adjusting satellite orbit.<\/p>\n<p>Challenge Winner: Indronil Ghosh of Folsom, CA<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Challenge Question: How is Don&#8217;s &#8220;tether assist&#8221; like the tether technology used in satellites? Challenge Answer: Don&#8217;s yo-yo acts like an end-mass in a momentum exchange tether system. He spins thestring(tether), thus exerting a centripetal force on the yo-yo. Given that a 2-bodysystem will orbit around its center of mass and Don&#8217;s hand represents a [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"swell_btn_cv_data":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[13,3],"tags":[],"class_list":["post-4417","post","type-post","status-publish","format-standard","hentry","category-newsnews","category-video-clip"],"aioseo_notices":[],"views":2090,"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p42RfF-19f","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/yoyorewind.com\/en\/wp-json\/wp\/v2\/posts\/4417","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yoyorewind.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yoyorewind.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yoyorewind.com\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/yoyorewind.com\/en\/wp-json\/wp\/v2\/comments?post=4417"}],"version-history":[{"count":1,"href":"https:\/\/yoyorewind.com\/en\/wp-json\/wp\/v2\/posts\/4417\/revisions"}],"predecessor-version":[{"id":4418,"href":"https:\/\/yoyorewind.com\/en\/wp-json\/wp\/v2\/posts\/4417\/revisions\/4418"}],"wp:attachment":[{"href":"https:\/\/yoyorewind.com\/en\/wp-json\/wp\/v2\/media?parent=4417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yoyorewind.com\/en\/wp-json\/wp\/v2\/categories?post=4417"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yoyorewind.com\/en\/wp-json\/wp\/v2\/tags?post=4417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}