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Kepler's Law vs Newton's Amendment

  1. Feb 6, 2012 #1
  2. jcsd
  3. Feb 7, 2012 #2

    Doc Al

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    Staff: Mentor

    That comes from the definition of center of mass. Perhaps her notation is confusing you. She uses 'dm' to represent the distance from the center of mass to the small mass m; d(M) represents the large mass M times the distance between the masses d.
     
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