Question

what is meant by uniform circular motion? give two examples of uniform cricular motion.
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Answer 1

Explanation:

When a body moves in a circular path with uniform speed (constant speed), its motion is called uniform circular motion. For e.g. (i) Artificial satellites move in uniform circular motion around the earth. (ii) Motion of a cyclist on a circular track.

Answer 2

Answer:

The examples of uniform circular motion are rotation of earth around sun or revolution of earth and Centripetal force. In the uniform circular motion the body which is rotating in a constant speed has a fixed central point and maintains equal distance from the centre of the rotation.

Explanation:

(a) When a body moves in a circular path with uniform speed (constant speed), its motion is called uniform circular motion. For e.g. 

(i) Artificial satellites move in uniform circular motion around the earth. 

(ii) Motion of a cyclist on a circular track 

(b) The speed of a body moving along a circular path is given by the formula: 

Given, t=60sec

Radius, r=10.5cm=0.105m

v=t2πr

v=t22πr=7×602×22×0.105=4204.62=0.011m/s

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