A) \[\frac{\omega }{2}\]
B) \[\frac{\omega }{3}\]
C) \[\frac{\omega }{4}\]
D) \[\frac{\omega }{5}\]
Correct Answer: B
Solution :
Applying law of conservation of angular momentum about point O \[I\omega =I\omega '+mvR\]or \[\left( \frac{m{{R}^{2}}}{2} \right)\omega =\left( \frac{m{{R}^{2}}}{2} \right)\omega '+m\omega '{{R}^{2}}\] \[=\left( \frac{m{{R}^{2}}}{2}+m{{R}^{2}} \right)\omega '\] \[\therefore \] \[\omega '=\omega /3\] Hence, the correction option is [b].You need to login to perform this action.
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