Rotational MotionHard
Question
A mass m hangs with the help of a string wrapped around a pulley on a frictionlessbearing. The pulley has mass m and radius R. Assuming pulley to be a perfect uniformcircular disc, the acceleration of the mass m, if the string does not slip on the pulley, is
Options
A.g
B.
C.
D.
Solution
Mg -T = Ma ......(i)
T × R = 1α =
MR2α T =
Ma (a = 
R) .....(ii)From (1) and (2) a =
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