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A particle of mass m is moving in a hori...

A particle of mass m is moving in a horizontal circle of radius r, under a centripetal force equal to `(-K//r^(2))`, where k is a constant. The total energy of the particle is -

A

`(K)/(2r)`

B

`-(K)/(2r)`

C

`-(K)/(r)`

D

`(K)/(r)`

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The correct Answer is:
B
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