A solid sphere of radius r is gently placed on a rough horizontal surface with an initial angular speed 
but no linear velocity. If the coefficient of friction is 
, then the time t when the slipping will stop is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Let m be the mass of the sphere.
Since, it is a case of backward slipping, force of friction is in forward direction. Limiting friction will act in this case.
Linear acceleration 
Angular retardation 
Slipping will be stopped when 
at 
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