{"id":18931,"date":"2018-01-20T12:27:40","date_gmt":"2018-01-20T12:27:40","guid":{"rendered":"https:\/\/cbselibrary.com\/?p=18931"},"modified":"2020-11-26T12:49:55","modified_gmt":"2020-11-26T07:19:55","slug":"math-labs-activity-prepare-clinometer-measure-height-object","status":"publish","type":"post","link":"https:\/\/cbselibrary.com\/math-labs-activity-prepare-clinometer-measure-height-object\/","title":{"rendered":"Math Labs with Activity – To Prepare a Clinometer to Measure the Height of an Object"},"content":{"rendered":"
OBJECTIVE<\/strong><\/span><\/p>\n To prepare a clinometer and use it to measure the height of an object (say a lamp post)<\/p>\n Materials Required<\/strong><\/span><\/p>\n Theory<\/strong> <\/span> Procedure<\/strong> <\/span> Observations and Calculations<\/strong><\/span> Math Labs with Activity<\/a>Math Labs<\/a>Science Practical Skills<\/a>Science Labs<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" Math Labs with Activity – To Prepare a Clinometer to Measure the Height of an Object OBJECTIVE To prepare a clinometer and use it to measure the height of an object (say a lamp post) Materials Required A thick chart paper A soft-drink straw A flexible string A small weight (a metal washer) A geometry … Read more<\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[6805],"tags":[],"yoast_head":"\n\n
\nConsider an object (e.g., a lamp post) at a distance d from you. Let your height be\u00a0h1<\/sub> and the height of the lamp post be h2<\/sub>. Let \u03b8 be the angle of elevation of the top of the lamp post with respect to your eye. If h = h2<\/sub> – h1<\/sub> then from Figure 42.1 we have h
\ntan \u03b8 = h\/d, i.e., h = d tan 0.
\n
\nheight of the lamp post = h2<\/sub> = h + h1<\/sub>= h1<\/sub>+ d tan \u03b8.<\/p>\n
\nStep 1:<\/strong> On the top side of the chart paper construct a large protractor as shown in Figure 42.2.
\nStep 2:<\/strong> Fix the soft-drink straw at the centre point O (as shown in Figure 42.2 using a nail. Ensure that the straw lies at your eye level.
\nStep 3:<\/strong> From the nail suspend a weight using a flexible string as shown in Figure 42.2.
\n
\nStep 4:<\/strong> A clinometer (also called inclinometer, as it is used for measuring the angle of slope, elevation or inclination of an object) is thus prepared.
\nStep 5:<\/strong> Measure the distance d of the object (lamp post) from the clinometer.
\nStep 6:<\/strong> Look through the straw and keep on tilting it till you are able to see the top of the lamp post.
\nStep 7:<\/strong> Hold the clinometer in this position and record the angle of elevation of the top of the lamp post.
\nStep 8:<\/strong> Record your height also.<\/p>\n
\nDistance of the object from you = d.
\nAngle of elevation of the top of the lamp post with respect to your eye = \u03b8.
\nYour height = h1<\/sub>.
\nTherefore, height of the lamp post h2<\/sub>=h1<\/sub>+d tan \u03b8.<\/p>\n