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Gravitational pull on probe between the Sun and the Earth

  1. Nov 8, 2006 #1
    How far from Earth must a space probe be along a line toward the Sun so that the Sun's gravitational pull on the probe balances the Earth's pull?

    I'm actually just confused as to how to set this up. I know that I need to consider d being the distance from the earth to the sun and r being the distance from the earth to the probe. And use (d-r). Any help as to how I should set this up would be greatly appreciated. Part of what I'm confused with is that when referring to pull I'm thinking that is a force right. I'm completely lost as to how to start this one.
     
  2. jcsd
  3. Nov 9, 2006 #2

    andrevdh

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    Equate the gravitational attractive power on the probe by the earth and the sun.
     
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