A body weighs 72 N on the Earth’s surface. How much gravitational force acts on it at a height equal to half Earth’s radius?
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A body weighs 72 N on the Earth’s surface. How much gravitational force acts on it at a height equal to half Earth’s radius?

G1 Physics · Accepted Answer

Step 1: Weight at height h follows W(h)=W₀[R/(R+h)]². Step 2: With h=R/2, W=72/(1.5)²=72×4/9=32 N. Final answer: A — 32 N.