STANDARD Physics Variation of g with altitude MCQ Question
A body hanging from a spring stretches it by 1 cm at the Earth's surface. How much will the same body stretch the spring at a place 1600 km above the Earth's surface? (Radius of the Earth 6400 km)
1.28 cm
0.64 cm
3.6 cm
0.12 cm
Correct Answer
Detailed Explanation
At a height h, the acceleration due to gravity is g' = g(R_E/(R_E + h))². Substituting the values, the stretch x' = 0.64 cm.
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