A) \[\frac{mgh}{R}\]
B) \[\frac{2}{3}\,mgR\]
C) \[\frac{3}{4}mgR\]
D) \[\frac{mgR}{2}\]
Correct Answer: C
Solution :
Key Idea: The gravitational potential energy of mass m in the gravitational field of mass M at distance r from it is . |
From key idea, potential energy |
At earth's surface, |
Now, if a body is taken to height then the potential energy is given by |
Thus, change in gravitational potential energy, |
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