A) \[2h\]
B) \[3h\]
C) \[(5/3)h\]
D) \[(4/3)h\]
Correct Answer: C
Solution :
[c] \[H=\frac{{{u}^{2}}}{2g}\]; given \[{{v}_{2}}=2{{v}_{1}}\] (i) A to B :\[{{v}^{2}}_{1}={{u}^{2}}-2gh\] (ii) A to C : \[{{v}_{2}}^{2}={{u}^{2}}-2g(-h)\] (iii) Solving (i),(ii),and (iii), we get the value of \[{{u}^{2}}\]as 10gh/3 and then we get the value of h by using \[H=\frac{{{u}^{2}}}{2g}\](see figure) or \[H=\frac{5h}{3}\]You need to login to perform this action.
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