Grade 11Mechanics
Find the height over the earth’s surface at which the weight of a body becomes half of its value at the surface.
1 Answer
Kevin Nash
Sol. Let the height be h
∴(1/2) GM/R^2 = GM/(R + h)^2
Or 2R^2 = (R + h)^2
Or √2 R = R = R + h
Or h = (r base 2 - 1)R
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