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Homework Help: CM: Gravitation and Force Center

  1. May 9, 2006 #1
    I can't seem to figure this one out.
    A particle at rest is attracted to a center of force by the relation
    F=-mk^2/x^3
    what is the time it takes for the particle to get to the force center from a distance d in terms of d and k?

    I can't seem to find any equations that will help me out on this one. Thanks PF
     
  2. jcsd
  3. May 9, 2006 #2

    Lee

    User Avatar

    I would like to point you towards Newtons second Law.
     
  4. May 9, 2006 #3
    the clue i was given is that energy is constant and equal to the potential enrgy at the initial position
     
  5. May 9, 2006 #4
    figured it out, thanks though
     
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