{"id":156624,"date":"2015-12-10T03:00:00","date_gmt":"2015-12-10T00:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=51279c7fb07f6a04acac9fdac491d0a2"},"modified":"2015-12-10T03:00:00","modified_gmt":"2015-12-10T00:00:00","slug":"exploring-the-aerodynamic-drag-of-a-moving-cyclist","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=156624","title":{"rendered":"Exploring the aerodynamic drag of a moving cyclist"},"content":{"rendered":"<p>Although the physics of cycling itself is a complex mixture of aerodynamics, physiology, mechanics,<br \/>\nand heuristics, using cycling as a context for teaching physics has a tradition of certainly more<br \/>\nthan 30 years. Here, a possible feature is the discussion of the noticeable resistant forces such as<br \/>\naerodynamic drag and the associated power consumption of cycling. We use an energy-based approach to<br \/>\nmodel the power input for driving a bike at a constant speed. This approach uses a numerical<br \/>\nsimulation of the slowing down of a bike moving without pedaling which is implementable with<br \/>\nstandard spreadsheet software. The simulation can be compared directly to simple measurements with<br \/>\nreal bikes as well as to an analytic solution of the underlying differential equation. It is<br \/>\npossible to derive realistic values for the aerodynamic drag coefficient ##IMG##<br \/>\n[http:\/\/ej.iop.org\/images\/0031-9120\/51\/1\/015001\/pedaa054dieqn001.gif] {${{c}_{text{D}}}$} and the<br \/>\ntotal power &#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Although the physics of cycling itself is a complex mixture of aerodynamics, physiology, mechanics,<br \/>\nand heuristics, using cycling as a context for teaching physics has a tradition of certainly more<br \/>\nthan 30 years. Here, a possible feature is the discu&#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-156624","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\/156624","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=156624"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/156624\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=156624"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=156624"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=156624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}