Q

Surface gravity is 9.8 m/s². What is gravity at an altitude equal to one-tenth of Earth's radius?

RRB Group-D 15/10/2018 / Shift III 2018
✓ Answer: D 8.1 m/s²
g_h = 9.8/(1 + 0.1)² = 9.8/1.21 ≈ 8.1 m/s².
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