{"id":15270,"date":"2016-04-15T21:55:30","date_gmt":"2016-04-15T21:55:30","guid":{"rendered":"http:\/\/www.oracletutoring.ca\/blog\/?p=15270"},"modified":"2016-04-15T21:55:30","modified_gmt":"2016-04-15T21:55:30","slug":"lifestyle-work-done-raking-part-ii","status":"publish","type":"post","link":"https:\/\/www.oracletutoring.ca\/blog\/lifestyle-work-done-raking-part-ii\/","title":{"rendered":"Lifestyle:  work done raking, part II"},"content":{"rendered":"<h1>The tutor compares the work done raking yesterday to climbing stairs.<\/h1>\n<p>In <a href=\"?p=15262\">yesterday&#8217;s post<\/a> I estimated that I had done 13,500J of work raking in the yard.  Let&#8217;s compare that to a distance climbing stairs.<\/p>\n<p>On Earth, the force due to gravity &#8211; aka, <em>weight<\/em> &#8211; is given by<\/p>\n<p style=\"text-align:center\">F=mg, where m is mass in kg, while g=9.8<\/p>\n<p>My mass is 82kg, so my weight is<\/p>\n<p style=\"text-align:center\">F=mg=82(9.8)=804N<\/p>\n<p>Work is given by<\/p>\n<p style=\"text-align:center\">W=Force*distance<\/p>\n<p>To raise myself, I need to overcome my weight of 804N by exerting the same upward.  How far do I need to climb to do 13,500J of work?<\/p>\n<p style=\"text-align:center\">13500=804*h, h=height<\/p>\n<p>Dividing both sides by 804, we arrive at<\/p>\n<p style=\"text-align:center\">h=13500\/804=17m.<\/p>\n<p>So, the work I did raking yesterday is equivalent to climbing stairs to a height of 17m: between 6 and 7 flights of residential stairs.<\/p>\n<p>I&#8217;ll be discussing more about the physics of everyday chores in future posts:)<\/p>\n<p>Source:<\/p>\n<p>Heath, Robert W., et al.  <u>Fundamentals of Physics<\/u>.  D.C. Heath Canada, Ltd, 1981.<\/p>\n<p>Jack of <a href=\"https:\/\/www.oracletutoring.ca\">Oracle Tutoring by Jack and Diane,<\/a> Campbell River, BC.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The tutor compares the work done raking yesterday to climbing stairs. In yesterday&#8217;s post I estimated that I had done 13,500J of work raking in the yard. Let&#8217;s compare that to a distance climbing stairs. On Earth, the force due &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"more-link\" href=\"https:\/\/www.oracletutoring.ca\/blog\/lifestyle-work-done-raking-part-ii\/\"> <span class=\"screen-reader-text\">Lifestyle:  work done raking, part II<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[181,7,1218],"tags":[],"class_list":["post-15270","post","type-post","status-publish","format-standard","hentry","category-lifestyle","category-physics","category-yard-work"],"_links":{"self":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/15270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/comments?post=15270"}],"version-history":[{"count":11,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/15270\/revisions"}],"predecessor-version":[{"id":15281,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/15270\/revisions\/15281"}],"wp:attachment":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/media?parent=15270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/categories?post=15270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/tags?post=15270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}