A) zero
B) \[2\,gH\]
C) \[mgH\]
D) \[\sqrt{2gH}\]
Correct Answer: D
Solution :
| [d] At B, the velocity is maximum. Taking vertical downward motion of body from A to B, we have, \[u=0,\,\,a=g,\,\,s=H\] and \[v=?\] |
| \[{{v}^{2}}={{u}^{2}}+2\,as;\] or \[{{v}^{2}}=0+2gH\] or \[v=\sqrt{2g\,H}\] |
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