CBSE Class 10 Answered
Make a clinometer and use it to measure the height of an object. Procedure: 1. Prepare a semi-circular protractor using any hard board and fix a viewing tube (straw or pipe) along the diameter. 2. Punch a hole (
o) at the centre of the semicircle.w} from a small nail fixed to the centre.d.
Using trigonometric ratio : tan A So, h = d If, for example, h
3. Suspend a weight {
4. Ensure that the weight at the end of the string hangs below the protractor.
5. Mark degrees
Determining the height of an object:
6. First measure the distance of the object from you. Let the distance be
7. Look through the straw or pipe at the top of the object. Make sure you can clearly
see the top of the object.
8. Hold the clinometer steady and let your partner record the angle the string makes
on the scale of the clinometer. Let this angle be A