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3 August, 08:31

The weight of a body above sea level varies inversely with the square of the distance from the center of Earth. If a woman weighs 131 pounds when she is at sea level, 3960 miles from the center of Earth, how much will she weigh when she is at the top of a mountain, 4.8 miles above sea level?

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  1. 3 August, 09:19
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    89.16pounds

    Explanation:

    The equation that defines this problem is as follows

    W=k/X^2

    where

    W=Weight

    K = proportionality constant

    X=distance from the center of Earth

    first we must find the constant of proportionality, with the first part of the problem

    k=WX^2=131x3960^2=2054289600pounds x miles^2

    then we use the equation to calculate the woman's weight with the new distance

    W=2054289600 / (4800) ^2=89.16pounds
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