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Two balls of mass 'm' and ' ( m)/( 10)' ...

Two balls of mass 'm' and `' ( m)/( 10)'` hang at the two ends of a string that passes through a fixed tube and one of the balls lies in the tube, while the other is outside of the tube. The mass `' (m)/( 10)'` is rotating about PQ, as shown in figure. Coefficient of friction between the tube and the ball is '1'. Ball which is insid the tube remains in rest and the time period of revolution of the smaller ball is maximum . Find the angle `'theta'` which is made by the string with vertical PQ.

A

`53^(@)`

B

`30^(@)`

C

`60^(@)`

D

`37^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
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