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Find Gravitational Force on an object

  1. Oct 11, 2011 #1
    1. The problem statement, all variables and given/known data

    An object has a weight W when it is on the
    surface of a planet of radius R.
    What will be the gravitational force on the
    object after it has been moved to a distance
    of 4 R from the center of the planet


    2. Relevant equations

    No clue

    3. The attempt at a solution
    no clue
     
  2. jcsd
  3. Oct 11, 2011 #2
    Use Newton's Law of Universal Gravitation.
     
  4. Oct 11, 2011 #3
    oh thanks i got the answer
     
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