A) ? 5000 J
B) ? 1000 J
C) ? 2400 J
D) 5000 J
Correct Answer: A
Solution :
\[{{v}_{e}}=\sqrt{\frac{2GM}{R}}=100\,\Rightarrow \,\frac{GM}{R}=5000\] Potential energy \[U=-\frac{GMm}{R}=-5000\,J\]
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