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A particle moves along a circle if radiu...

A particle moves along a circle if radius (20 //pi) m with constant tangential acceleration. If the velocity of the particle is ` 80 m//s` at the end of the second revolution after motion has begun the tangential acceleration is .

A

`40pim//s^2`

B

`40m//s^2`

C

`640pim//s^2`

D

`160pim//s^2`

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The correct Answer is:
B
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