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Homework Help: Change of force between two bodies according to the universal law of gravitation.

  1. Oct 3, 2012 #1
    1. The problem statement, all variables and given/known data
    If you triple the distance between two objects the gravitational force will....
    A. Increase by the factor of 3
    B. decrease by a factor of 3
    C. Decrease by a factor of 6
    D. Increase by a factor of 9
    E. decrease by a factor of 9

    2. Relevant equations

    3. The attempt at a solution
    Obviously it decreases but I'm just not sure I know what information I'm supposed to use to come to the right factor.
  2. jcsd
  3. Oct 3, 2012 #2


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    Homework Helper
    Gold Member
    2017 Award

    Newton's law of gravitation states that the force varies "inversely as the square of the distance".
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