A body of mass m is raised from Earth’s surface to height 2R above the surface. What is the increase in its gravitational potential energy?
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A body of mass m is raised from Earth’s surface to height 2R above the surface. What is the increase in its gravitational potential energy?

G1 Physics · Accepted Answer

Step 1: Initial distance is R; final distance is 3R. Step 2: ΔU=−GMm/(3R)+GMm/R=(2/3)GMm/R=(2/3)mgR. Final answer: D — 2mgR/3.