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A particle is moving in a circular path of radius a under the action of an attractive potential U = – 2 2 r k . Its total energy is -

1. – 2 4 a k
2. 2 2 a k
3. zero
4. – 2 3 2 a k Students may find similar question in CP exercise sheet : [ JEE Main, Chapter : Work, Power & Energy, Similar in Exercise # 5 (B), Q. No. 3 ]

Correct answer: zero

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