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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`

Text Solution

Verified by Experts

The correct Answer is:
C
`pi r `
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Knowledge Check

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

    A
    kmt
    B
    ktmr
    C
    km/t
    D
    kmr/t

  • A particle is moving in a circular path of radius a under the action of an attractive potential U = -k/(2r^(2)) .Its energy is

    A
    `k/(4a^(2))`
    B
    `k/(2a^(2))`
    C
    zero
    D
    `-3/2 k(a^(2))`

  • An alpha particle of mass m moves on a circular path of radius r in a plane inside and normal to uniform magnetic field B. The time taken by this particle to complete one revolution is ________

    A
    `(4pieB)/m`
    B
    `(8pie^(2)B)/m`
    C
    `(4pime)/B`
    D
    `(pim)/(Be)`

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