A) \[\frac{2}{3}m\]
B) \[\frac{2}{9}m\]
C) 18 m
D) 6 m
Correct Answer: C
Solution :
Applying conservation of total mechanical energy principle \[\frac{1}{2}m{{v}^{2}}=m{{g}_{A}}{{h}_{A}}+m{{g}_{B}}{{h}_{B}}\] \[\Rightarrow \]\[{{g}_{A}}{{h}_{A}}={{g}_{B}}{{h}_{B}}\] \[\Rightarrow \]\[{{h}_{B}}=\left( \frac{{{g}_{A}}}{{{g}_{B}}} \right){{h}_{A}}=9\times 2=18\,m\]You need to login to perform this action.
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