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Equation mv^2/r=GmM/r^2

  1. Oct 17, 2003 #1
    like in the equation mv^2/r=GmM/r^2 how do we find gravity? so earth has a gravity of 1? g=f/m? like that?
    Last edited by a moderator: Feb 6, 2013
  2. jcsd
  3. Oct 17, 2003 #2


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    Gold Member

  4. Oct 17, 2003 #3


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    Staff: Mentor

    You shoulda stayed with the other thread, we were explaining it there. You are missing the concept: An individual object doesn't have "gravity" in the Newtonian sense, just like it doesn't have "weight." As the equation says, gravity is a force between two objects.

    Wolram's link is good, the first thing you need to concentrate on, understand, and accept is that first sentence.
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