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A particle of mass m moves on a circular...

A particle of mass m moves on a circular path of radius r . Its centripetal acceleration is `kt^(2)` , where k is a constant and t is time . Express power as function of t .

A

`2pi r `

B

`2r`

C

`pir`

D

`r`

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The correct Answer is:
C
`pi r `
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