A uniform disc of mass 
and radius 
is mounted on an axle supported on frictionless bearings. A light cord is wrapped around the rim of the disc and a steady downward pull, T is exerted on the cord. The angular acceleration of the disc is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
The torque exerted on the disc is given by
…(i)
…(ii)
From Eqs. (i) and (ii), we get
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