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Question about satellite orbit

  1. Nov 27, 2005 #1
    I'm a beginner in physics and have a couple easy question;

    How far from earth must a space porbe be along a line toward the sun so that the sun's gravitational pull balances the earth's?

    A spaceship is going from the earth to the moon in a trajectory along the line joining the centers of the two bodies. At what distance from the earth will the net gravtitational force on the spaceship be zero?

    Thanks for you time.
  2. jcsd
  3. Nov 27, 2005 #2


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    Homework Helper

    Do you know the functional form of the gravitational Force?
    Do you know how to add vectors?

    You have to tell us what you already know about this topic ...
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