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A gramophone record is revolving with an...

A gramophone record is revolving with an angular speed .A coin is placed at a distance r from the centre of the record.RThe coefficient of static friction is u.the coin will revolve with the record if :

A

`r gt mug//omega^(2)`

B

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

C

`r lt mu g //omega^(2)`only

D

`r le mug//omega^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
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