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Energy- Mass gravity?

  1. Feb 1, 2013 #1
    Hi I was wondering if there is an equation for finding the gravitational pull on on all object in the universe (including that's that are massless)
     
  2. jcsd
  3. Feb 1, 2013 #2

    bcrowell

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  4. Feb 1, 2013 #3
    i am aware of this already but i want to know does a is there a existing method to covert these to the unit Newtons
     
  5. Feb 1, 2013 #4
    and also in the equation that was in the wiki, how is the Mass-Energy density expressed in the equation
     
  6. Feb 1, 2013 #5

    pervect

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    I don't quite understand the question. Do you mean "from all the objects in the universe"?
     
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