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Homework Help: Angular velocity of a satellite

  1. Oct 15, 2009 #1
    1. The problem statement, all variables and given/known data

    A 5.00x10^3kg is orbiting the earth in a circular path. The height of the satellite above the earth is 8.00x10^2km what is the magnitude of the angular velociy?
    Mass of earth: 5.98x10^24kg
    radius of earth plus satellite:6380800m

    2. Relevant equations


    3. The attempt at a solution
    I know the satellite isn't involved I keep getting 1.23x10-3 but it's not any of the choices for multiple choice. Can anyone explain how to do this problem
  2. jcsd
  3. Oct 15, 2009 #2
    do u mean with g the gravitacional forces
  4. Oct 15, 2009 #3
    G the gravitational constant
  5. Oct 15, 2009 #4
    try it with this gm1m2/r2=v2/r then get in to this gm1m2 x r = v2 x r2
  6. Oct 15, 2009 #5


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    Homework Helper

    Welcome to PF!

    Hi crazuiee! Welcome to PF! :smile:

    (try using the X2 and X2 tags just above the Reply box :wink:)
    Leave out m2, and that's correct :wink:

    (But did you add just 800 metres? :redface:)

    Show us your full calculations if you want us to check for the mistake. :smile:
  7. Oct 16, 2009 #6
    oh right about m2 tim dident notice that
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