Published by:
CGP EDU Academic Team
Published on: August 13, 2026
As shown in the figure, a bob of mass 
is tied by a massless string whose other end portion is wound on a flywheel (disc) of radius 
and mass 
. When released from the rest, the bob starts falling vertically. When it has covered a distance 
, the angular speed of the wheel will be (there is no slipping between string and wheel)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
By energy conservation,
Since the rope is inextensible and also it is not slipping,
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