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22 February, 09:41

An object weighs 100 lb. on the surface of the earth. How much does it weigh 4R from the surface? (5R from the center)

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  1. 22 February, 09:53
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    You will have the relationF1/F2=r2^2/r1^2where, F1=100r1=Rr2=5RYou are now supposed to find F2
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