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If a particle covers half the circle of ...

If a particle covers half the circle of radius R with constant speed then

A

`2pir,0`

B

`2r,pir`

C

`(pir)/(2),2r`

D

`pir,r`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • If a particle moves in a circle of radius r with constant speed under centripetal force F, then the work done in completing full circle will be ,

    A
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    B
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  • A particle moves in circle of radius R with a constant speed v. Then, find the magnitude of average acceleration during a time interval (pi R)/(2v) .

    A
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    B
    `2sqrt(2)V^(2)// pi R `
    C
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    D
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  • If a particle is moving along a circle of radius 3 m with a constant speed 9 m//s , then it covers a quarter of the circle in time of

    A
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