body of mass 1 kg is rotating in a circular path of radius 1 m with constant velocity of 5 rev/sec. What is the work done in one complete revolution?
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Explanation:
According to work energy theorem, ΔK.E.=W and here work is done by the gravitational force.
⇒ΔK.E.=W=mg (2r)=1×10×2(1)=20 J
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