{"id":953,"date":"2021-04-16T11:34:42","date_gmt":"2021-04-16T11:34:42","guid":{"rendered":"https:\/\/shirishpathare.com\/?page_id=953"},"modified":"2021-04-16T11:34:42","modified_gmt":"2021-04-16T11:34:42","slug":"angular-speed-of-ceiling-fan","status":"publish","type":"page","link":"https:\/\/sites.hbcse.tifr.res.in\/shirish\/index.php\/vigyan-vidushi\/angular-speed-of-ceiling-fan\/","title":{"rendered":"Angular Speed of Ceiling Fan"},"content":{"rendered":"\n<p>Aim: To determine the angular speed of fan at different positions of the regulator knob.<\/p>\n\n\n\n<p>Apparatus: Ceiling fan, stop watch<\/p>\n\n\n\n<p>Introduction:<\/p>\n\n\n\n<p>Have you ever wondered about the relation between the angular speed of a fan and the five step regulator knob. In this activity we will explore this relation. We have recorded the videos of a fan (in slow motion video mode of the smartphone) with regulator knob positions changing from 1 to 5. You are expected to generate the data from these videos and plot a graph between the angular speed of the fan and the knob position.<\/p>\n\n\n\n<p>Procedure:<\/p>\n\n\n\n<ol class=\"wp-block-list\" type=\"1\"><li>From the videos given below, generate the data for angular speed of the fan at different regulator knob positions with 1% uncertainty in the measurement.<\/li><li>Plot a graph between angular speed of the fan and the regulator knob position. <\/li><\/ol>\n\n\n\n<figure class=\"wp-block-video aligncenter wp-block-embed is-type-video is-provider-videopress wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"VideoPress Video Player\" aria-label='VideoPress Video Player' width='760' height='428' src='https:\/\/video.wordpress.com\/embed\/R7Fcm27S?muted=1&amp;persistVolume=0&amp;preloadContent=metadata&amp;hd=0&amp;cover=1' frameborder='0' allowfullscreen allow='clipboard-write'><\/iframe><script src='https:\/\/v0.wordpress.com\/js\/next\/videopress-iframe.js?m=1674852142'><\/script>\n<\/div><figcaption>Regulator Knob 1<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-video aligncenter wp-block-embed is-type-video is-provider-videopress wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"VideoPress Video Player\" aria-label='VideoPress Video Player' width='760' height='428' src='https:\/\/video.wordpress.com\/embed\/feANZC5q?muted=1&amp;persistVolume=0&amp;preloadContent=metadata&amp;hd=0&amp;cover=1' frameborder='0' allowfullscreen allow='clipboard-write'><\/iframe><script src='https:\/\/v0.wordpress.com\/js\/next\/videopress-iframe.js?m=1674852142'><\/script>\n<\/div><figcaption>Regulator Knob 2<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-video aligncenter wp-block-embed is-type-video is-provider-videopress wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"VideoPress Video Player\" aria-label='VideoPress Video Player' width='760' height='428' src='https:\/\/video.wordpress.com\/embed\/RAUZ4G5t?muted=1&amp;persistVolume=0&amp;preloadContent=metadata&amp;hd=0&amp;cover=1' frameborder='0' allowfullscreen allow='clipboard-write'><\/iframe><script src='https:\/\/v0.wordpress.com\/js\/next\/videopress-iframe.js?m=1674852142'><\/script>\n<\/div><figcaption>Regulator Knob 3<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-video aligncenter wp-block-embed is-type-video is-provider-videopress wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"VideoPress Video Player\" aria-label='VideoPress Video Player' width='760' height='428' src='https:\/\/video.wordpress.com\/embed\/52Fum645?muted=1&amp;persistVolume=0&amp;preloadContent=metadata&amp;hd=0&amp;cover=1' frameborder='0' allowfullscreen allow='clipboard-write'><\/iframe><script src='https:\/\/v0.wordpress.com\/js\/next\/videopress-iframe.js?m=1674852142'><\/script>\n<\/div><figcaption>Regulator Knob 4<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-video aligncenter wp-block-embed is-type-video is-provider-videopress wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"VideoPress Video Player\" aria-label='VideoPress Video Player' width='760' height='428' src='https:\/\/video.wordpress.com\/embed\/lvdNyRPH?muted=1&amp;persistVolume=0&amp;preloadContent=metadata&amp;hd=0&amp;cover=1' frameborder='0' allowfullscreen allow='clipboard-write'><\/iframe><script src='https:\/\/v0.wordpress.com\/js\/next\/videopress-iframe.js?m=1674852142'><\/script>\n<\/div><figcaption>Regulator Knob 5<\/figcaption><\/figure>\n\n\n\n<p>3. You can also download the videos by clicking on the links below:<\/p>\n\n\n\n<p>a. <a href=\"http:\/\/158.144.44.204\/shirish\/wp-content\/uploads\/2021\/04\/knob-1.mp4\">Knob 1<\/a><\/p>\n\n\n\n<p>b. <a href=\"http:\/\/158.144.44.204\/shirish\/wp-content\/uploads\/2021\/04\/knob-2.mp4\">Knob 2<\/a><\/p>\n\n\n\n<p>c. <a href=\"http:\/\/158.144.44.204\/shirish\/wp-content\/uploads\/2021\/04\/knob-3.mp4\">Knob 3<\/a><\/p>\n\n\n\n<p>d. <a href=\"http:\/\/158.144.44.204\/shirish\/wp-content\/uploads\/2021\/04\/knob-4.mp4\">Knob 4<\/a><\/p>\n\n\n\n<p>e. <a href=\"http:\/\/158.144.44.204\/shirish\/wp-content\/uploads\/2021\/04\/knob-5.mp4\">Knob 5<\/a><\/p>\n\n\n\n<p><strong>Observations:<\/strong><\/p>\n\n\n\n<p>In order to get your response, we are providing you with a google form. So that, we can get an idea about <\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>your data collection techniques, <\/li><li>variables chosen for measurements,<\/li><li>your data and <\/li><li>the graphs that you will  plot.<\/li><\/ol>\n\n\n\n<p>The google form: <a rel=\"noreferrer noopener\" href=\"https:\/\/docs.google.com\/forms\/d\/1UEFWupY-wUd0EGyt1bLg-8DlXJVZzhFXEXNXlGhYrDU\/edit\" target=\"_blank\">https:\/\/docs.google.com\/forms\/d\/154csQiQlT5Az5YcGHKtqeCnbMqUltpBUlErXrGXtBCo\/edit<\/a><\/p>\n\n\n\n<p>Use spreadsheet for calculations, if needed: <a href=\"http:\/\/158.144.44.204\/shirish\/wp-content\/uploads\/2021\/04\/spreadsheet-for-observations.xlsx\">spreadsheet<\/a><\/p>\n\n\n\n<p>Download the graph sheet given below to plot the graph: <a href=\"http:\/\/158.144.44.204\/shirish\/wp-content\/uploads\/2021\/05\/graph.pdf\">Graph Sheet<\/a><\/p>\n\n\n\n<p><strong>Note: <\/strong><\/p>\n\n\n\n<p>What is meant by 1% uncertainty in the measurement of data?<\/p>\n\n\n\n<p>When we say that we want to measure a variable, <em>y<\/em> with 1% uncertainty, it means that <\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><a href=\"http:\/\/158.144.44.204\/shirish\/wp-content\/uploads\/2021\/05\/screenshot-2021-05-31-at-12.46.46-pm.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/158.144.44.204\/shirish\/wp-content\/uploads\/2021\/05\/screenshot-2021-05-31-at-12.46.46-pm.png?w=274\" alt=\"\" class=\"wp-image-1197\" width=\"98\" height=\"61\" \/><\/a><\/figure><\/div>\n\n\n\n<p>It means that the measured quantity is at least 100 times the least count.<\/p>\n\n\n\n<p><strong>Extra Work:<\/strong><\/p>\n\n\n\n<p>Repeat the same procedure for the ceiling fan at your home and plot the graph between the angular speed and knob position. Is there a change in the nature of the graph?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aim: To determine the angular speed of fan at different positions of the regulator knob. Apparatus: Ceiling fan, stop watch Introduction: Have you ever wondered about the relation between the angular speed of a fan and the five step regulator knob. In this activity&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":1026,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-953","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.hbcse.tifr.res.in\/shirish\/index.php\/wp-json\/wp\/v2\/pages\/953","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.hbcse.tifr.res.in\/shirish\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.hbcse.tifr.res.in\/shirish\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.hbcse.tifr.res.in\/shirish\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.hbcse.tifr.res.in\/shirish\/index.php\/wp-json\/wp\/v2\/comments?post=953"}],"version-history":[{"count":0,"href":"https:\/\/sites.hbcse.tifr.res.in\/shirish\/index.php\/wp-json\/wp\/v2\/pages\/953\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/sites.hbcse.tifr.res.in\/shirish\/index.php\/wp-json\/wp\/v2\/pages\/1026"}],"wp:attachment":[{"href":"https:\/\/sites.hbcse.tifr.res.in\/shirish\/index.php\/wp-json\/wp\/v2\/media?parent=953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}