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

10 J

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8 J

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5 J

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0 J

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Solution

The correct option is D $0 J$
Work done $W = F o r c e \times D i s p l a c e m e n t$
Since the body is moving on a circular track, the net displacement after one revolution is zero.
$W = F o r c e \times 0 = 0$
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 by the body to complete one revolution? (Take g=10 ms−2)

The correct option is D 0 JWork done W=Force×Displacement Since the body is moving on a circular track, the net displacement after one revolution is zero. W=Force×0=0 Hence work done is zero.

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

The correct option is D $0 J$
Work done $W = F o r c e \times D i s p l a c e m e n t$
Since the body is moving on a circular track, the net displacement after one revolution is zero.
$W = F o r c e \times 0 = 0$
Hence work done is zero.