STANDARD Physics Variation of g with height MCQ Question
A body weighs 72 N on the surface of the Earth. What is the gravitational force on it due to the Earth at a height equal to half the radius of the Earth?
16 N
28 N
32 N
72 N
Correct Answer
Detailed Explanation
At height h = Rₑ/2, the gravitational force is F = mg(4/9) = 32 N, as g at height h is g/9.
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