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