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A boy is sitting on a horizontal platfor...

A boy is sitting on a horizontal platform of joy wheel at a distance of 5 m from its centre .The joy wheel begins to rotate and when the angular speed exceeds 10 revolutions per minute, the boy just slip , the cofficient of friction between
(`g=10m//s^(2))`

A

`pi ^(2)//6`

B

`pi^(2)//18`

C

`pi//6`

D

`pi//2`

Text Solution

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The correct Answer is:
B
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