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A gramphone record is revolving with an ...

A gramphone record is revolving with an angular velocity omega. A coin is placed at a distance `r` from the centre of the record. The static coefficient of friction is mu. The coin will revolve with the record if.

A

`R gt mug/omega^(2)`

B

`R = mug/omega^(2) only`

C

`R lt mug/omega^(2)`

D

`R le mu/omega^(2) `

Text Solution

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The correct Answer is:
D
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