A) \[\frac{GMm}{3R}\]
B) \[\frac{GMm}{4R}\]
C) \[\frac{7GMm}{8R}\]
D) \[\frac{8GMm}{7R}\]
Correct Answer: C
Solution :
Required energy \[=T{{F}_{f}}-T{{E}_{i}}=-\,\left( \frac{-GMm}{2(3R+R)} \right)\,-\left( -\frac{GMm}{R} \right)\] \[=-\,\frac{GMm}{8R}+\frac{GMm}{R}=\frac{7GMm}{8R}\]You need to login to perform this action.
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