A) \[\sqrt{\frac{2gh}{(M+m){{r}^{2}}+l}}\]
B) \[\sqrt{\frac{2(M+m)gh}{(M-m){{r}^{2}}+l}}\]
C) \[\sqrt{\frac{2Mgh}{(M-m){{r}^{2}}+l}}\]
D) \[\sqrt{\frac{2(M-m)gh}{(M+m){{r}^{2}}+l}}\]
Correct Answer: D
Solution :
Idea In this question as mass moves and pulley rotates then by energy conservation. Loss of potential energy = gain in linear kinetic energy + gain in rotational kinetic energyYou need to login to perform this action.
You will be redirected in
3 sec