Two masses 
and M are connected by a light string that passes through a smooth hole O at the centre of a table. Mass 
lies on the table and M hangs vertically. 
is moved round in a horizontal circle with O as the centre. If 
is the length of the string from O to 
then the frequency with which 
should revolve so that M remains stationary is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
‘ m ’ Mass performs uniform circular motion on the table. Let n is the frequency of revolution then centrifugal force 
For equilibrium this force will be equal to weight Mg
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