Gravitational Potential Energy: A stone is held at a height h above the ground. A second stone with four times the mass of the first one is held at the same height. The gravitational potential energy of the second stone compared to that of the first stone is
A. one-fourth as much.
B. one-half as much.
C. twice as much.
D. four times as much.
E. the same.
Answer: D
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