Question

2 A girl is running with a uniform speed. How
much work is done by the girl?​

Answer 1

Answer:

When a body moves in a circular path. no work is done since the force ou the body is directed towards the came of circular path (the body is acted upon by the centripetal force). while the displacement at all instants is alone tlw tangent to the circular path, i.e.. nonual to the direction of force.

So, work done is zero.

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