A body of mass m is moved from Earth’s surface to height h=3R. What is the change in its gravitational potential energy?
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A body of mass m is moved from Earth’s surface to height h=3R. What is the change in its gravitational potential energy?

G1 Physics · Accepted Answer

Step 1: Initial radius is R, final radius is 4R. Step 2: ΔU=GMm(1/R−1/(4R))=(3/4)GMm/R=3mgR/4. Final answer: C — 3mgR/4.