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11 February, 10:11

A person can jump 1.5m on the earth. How high could the person jump on a planet having the twice the mass of the earth and twice the radius of the earth?

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Answers (2)
  1. 11 February, 10:34
    0
    F=mg=Gm1m2/r^2

    g=Gm2/r^2

    g=2Gm2 / (2r) ^2=2Gm2/4r^2=Gm2/2r^2

    So since there is half times the gravity on this unknown planet that has twice earth's mass and twice it's radius, then the person can jump twice as high. 1.5*2 = 3m high
  2. 11 February, 10:48
    0
    I believe you'd have to calculate the different planets info and use the formula you the problem used to find their height of the jump in order to find yours ...
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