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Homework Help: Geosynchronous satellite

  1. Oct 25, 2008 #1
    1. The problem statement, all variables and given/known data
    http://i241.photobucket.com/albums/ff4/alg5045/MUG_co_6.jpg

    A satellite that goes around the earth once every 24 hours is called a geosynchronous satellite is in an equatorial orbit, its position appears stationary with respect to a ground station, and it is known as a geostationary satellite.

    Find the radius R of the orbit of a geosynchronous satellite that circles the earth. (Note that R is measured from the center of the earth, not the surface) You may use the following constants:

    G=6.67*10^-11
    mass of the earth = 5.98*10^24 kg
    radius of the earth = 6.38*10^6 m


    2. Relevant equations



    3. The attempt at a solution

    I have no idea how to even begin this problem.
     
  2. jcsd
  3. Oct 25, 2008 #2

    D H

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    What is a geosynchronous satellite's orbital period? What are the relevant equations regarding orbital period?
     
  4. Oct 25, 2008 #3
    The orbital period is 24 hours or 86400 seconds. I think the relevant equation is v = 2(pi)(r)/T.
     
  5. Oct 25, 2008 #4

    D H

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    You aren't incorporating gravity. You need to do that.
     
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