A body of mass 10 kg is moving on a circular track of radius 15 m. What is work done on it in one complete revolution? (Take $g = 10 m s^{- 2}$ )

zero

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1500 J

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3000 J

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depends on velocity of rotation

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Solution

The correct option is A
zero

Since the body is moving on a circular track, net displacement in one rotation is zero.
$W o r k d o n e W = F o r c e \times D i s p l a c e m e n t$
$W = F o r c e \times 0 = 0$
Hence work done is zero.

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A body of mass 10 kg is moving on a circular track of radius 15 m. What is work done on it in one complete revolution? (Take g=10 ms−2)

The correct option is A zero Since the body is moving on a circular track, net displacement in one rotation is zero. Work done W=Force×Displacement W=Force×0=0 Hence work done is zero.

A body of mass 10 kg is moving on a circular track of radius 15 m. What is work done on it in one complete revolution? (Take $g = 10 m s^{- 2}$ )

The correct option is A
zero

Since the body is moving on a circular track, net displacement in one rotation is zero.
$W o r k d o n e W = F o r c e \times D i s p l a c e m e n t$
$W = F o r c e \times 0 = 0$
Hence work done is zero.