A) \[\sqrt{2gh}\]
B) \[\frac{M+m}{m}\sqrt{gh}\]
C) \[\frac{m}{m+M}(2gh)\]
D) \[\frac{M+m}{M}\sqrt{2gh}\]
Correct Answer: D
Solution :
[d] Apply momentum of conservation (before collision) \[{{P}_{1}}={{P}_{2}}\] (after collision) \[mv=(M+m)\,V\] \[V=\sqrt{2gh}\,\,\,put\,this\,in\,(1)\] \[\sqrt{2gh}=\frac{mv}{M+m}\] \[V=\frac{M+m}{m}\sqrt{2gh}\]You need to login to perform this action.
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