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Asked by sam

A woman weighs 125 lbs on the surface of the earth ( radius = 3960 miles). At what distance above the surface of the earth would she weigh 85 lbs?
3 years ago

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Answered by oobleck
Since F = GMm/r^2,
at a height of h miles, you want
(3960+h)^2/3960^2 = 125/85
3 years ago

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