A large mass M hangs stationary at the end of a light string that passes through
smooth fixed ring to a small mass m that moves around in a horizontal circular path. If 
is the length of the string from m to the top end of the tube and 
is angle between this part and vertical part of the string as shown in the figure, then time taken by m to complete one circle is equal to
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
For 
to be stationary
…….
Also, for mass m,
…….
…… ..
dividing by
Time period 
From and 
then time period 
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