{"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":"

Math Labs with Activity – To Prepare a Clinometer to Measure the Height of an Object<\/strong><\/span><\/h2>\n

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

    \n
  1. A thick chart paper<\/li>\n
  2. A soft-drink straw<\/li>\n
  3. A flexible string<\/li>\n
  4. A small weight (a metal washer)<\/li>\n
  5. A geometry box<\/li>\n<\/ol>\n

    Theory<\/strong> <\/span>
    \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\"Math
    \nheight of the lamp post = h2<\/sub> = h + h1<\/sub>= h1<\/sub>+ d tan \u03b8.<\/p>\n

    Procedure<\/strong> <\/span>
    \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\"Math
    \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

    Observations and Calculations<\/strong><\/span>
    \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

    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":"\nMath Labs with Activity - To Prepare a Clinometer to Measure the Height of an Object - CBSE Library<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cbselibrary.com\/math-labs-activity-prepare-clinometer-measure-height-object\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Math Labs with Activity - To Prepare a Clinometer to Measure the Height of an Object\" \/>\n<meta property=\"og:description\" content=\"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 ... 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