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Homework Help: Newton`s Laws Question

  1. Oct 16, 2007 #1
    1. The problem statement, all variables and given/known data

    1. What happens to the gravitational force between two masses when the distance between the masses is doubled?

    2. According to Newton’s version of Kepler’s third law, how does the ratio (T^2/r^3) change if the mass of the sun is doubled?
  2. jcsd
  3. Oct 16, 2007 #2


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    Homework Helper

    For the first one, what's the equation of gravitational force? What happens if you double the distance and keep everything else the same? Tell us what you think.
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