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A body of mass 30 kg starts running rest...

A body of mass `30 kg` starts running rest along a ciruclar path of radius `6m` with constant tangential acceleration of magnitude `2 m//s^(2)`. After `2 sec` from start he feels that his shoes started slipping on ground. The friction coefficient between his shoes and ground is `: ( ` Take `g=10m//s^(2))`

A

`1/2`

B

`1/3`

C

`1/4`

D

`1/5`

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The correct Answer is:
B
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