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How far would you have to drill into the Earth, to reach a point where your...

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Physics

How far would you have to drill into the Earth, to reach a pointwhere your weight is reduced by 7.5%? Approximate the Earth as a uniform sphere.

Answer & Explanation Solved by verified expert
3.6 Ratings (386 Votes)
Let F1 weight on the surface at radius r1 Let F2 weight in the hole at radius r2 Let m1 mass of person Let m2 mass of entire earth of radius r1 Let m3 mass of earth of radius r2 Look up in your physics    See Answer
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