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Homework Help: If there is a satellite in geosynchronous orbit

  1. Jul 11, 2010 #1
    1. The problem statement, all variables and given/known data

    Does the centripetal force equal the gravitational force?

    2. Relevant equations

    Fg = G(m1)(m2) / r^2
    Fc = 4(pi^2)(m)(r) / T^2

    3. The attempt at a solution

    I have the mass of a satellite in geosynchronous Earth orbit. The period of Earth's orbit, and the Earth's radius and mass.
    I need to find the distance of the satellite above earth.

    Is it right to set Fc = Fg?
  2. jcsd
  3. Jul 11, 2010 #2


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    Homework Helper

    As long as the satellite is travelling in a circular orbit around the Earth, the gravitational force provides the centripetal force. The geosynchronous orbit gives you the period time of the satellite.
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