A uniform disc of radius R and mass M is free to rotate only about its axis. A string is wrapped over its rim and a body of mass m is tied to the free end of the string as shown in the figure. The body is released from rest. Then the acceleration of the body is - |
[JEE Online 08-04-2017] |
A) \[\frac{2Mg}{2m+M}\]
B) \[\frac{2Mg}{2M+m}\]
C) \[\frac{2mg}{2M+m}\]
D) \[\frac{2mg}{2m+M}\]
Correct Answer: D
Solution :
[d] mg - T = ma |
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