A) \[\frac{2Gr}{M+m}\]
B) \[\sqrt{\frac{2Gr}{M+m}}\]
C) \[\frac{2G(M+m)}{r}\]
D) \[\sqrt{\frac{2G(M+m)}{r}}\]
Correct Answer: D
Solution :
According to law of conservation of energy, \[W=\frac{GMm}{r}=\frac{1}{2}\frac{mM}{m+M}{{v}^{2}}\]or\[v=\sqrt{\frac{2G(M+m)}{r}}\]You need to login to perform this action.
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