{"id":88911,"date":"2015-05-27T03:00:00","date_gmt":"2015-05-27T00:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=70b3ab3df06056ad66ec2bca10f3cc56"},"modified":"2015-05-27T03:00:00","modified_gmt":"2015-05-27T00:00:00","slug":"measuring-the-acceleration-due-to-gravity-using-an-ir-transceiver","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=88911","title":{"rendered":"Measuring the acceleration due to gravity using an IR transceiver"},"content":{"rendered":"<p>In this paper, we present a new technique to study the dynamics of a free-falling object in a lab<br \/>\nsetting and to measure the acceleration due to gravity g using a simple and economic setup. The<br \/>\nprecise measurement of time taken for an object to fall freely passing an infrared (IR) transceiver<br \/>\nis utilized to deduce the acceleration due to gravity. The reflected IR intensity from a<br \/>\nfree-falling 0.19 m rod of equally spaced white stripes of 0.01 m is detected and sent to a digital<br \/>\noscilloscope to observe and record the falling time period of each stripe. By fitting recorded<br \/>\nelapsed falling times to the well-known quadratic equation of motion under constant acceleration, an<br \/>\naccurate value of the acceleration due to gravity of g\u00a0=\u00a09.8092\u00a0\u00b1\u00a00.0384 m s \u22122 is obtained. In<br \/>\naddition to its accuracy, the proposed technique is safer and more economic than most of the other<br \/>\ncurrently used setups to determine g in undergraduate teaching labs. This study may provi&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this paper, we present a new technique to study the dynamics of a free-falling object in a lab<br \/>\nsetting and to measure the acceleration due to gravity g using a simple and economic setup. The<br \/>\nprecise measurement of time taken for an object to fall &#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-88911","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\/88911","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=88911"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/88911\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=88911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=88911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=88911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}