(4) May be fals t (3) May be true 42. A particle of mass m moves with constant speed v on a circular path of radius r as shown in figure. The average force on it during its motion from A to B is
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root3/2 mv^2/r
Explanation:
when we take components of the centripetal force we use the sine component
as total angle is 120 use sin120 into centripetal force (which is directed towards the centre)
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