A) \[\frac{M\omega }{2m}\]
B) \[\frac{2m\omega }{M}\]
C) \[\frac{(M+2m)\omega }{M}\]
D) \[\frac{M\omega }{(M+2m)}\]
Correct Answer: D
Solution :
Angular moment of ring will be conserved. \[{{I}_{1}}\omega ={{I}_{2}}\omega \] \[\frac{M{{R}^{2}}}{2}\omega =\left( \frac{M+2m}{2} \right){{R}^{2}}\omega \] \[\omega =\frac{M\omega }{(M+2m)}\]
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