Question

A man holding a weight of 20 kg is moving a circular track of radius 5 m calculate work done by the man. If he complete a semi circle 4m/s²
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Answer 1

Answer:

The work done by the man is zero because he is travelling in a circular path

Let us think he started from point A and completed the round and again came to A.

So the Displacement should be zero as he returned his initial position.

And we also know that w= f* d

Here a d=0 so work done should be zero

Hope it helps you

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