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Homework Help: Find the velocity of an object to become a satellite of Eart

  1. Feb 7, 2015 #1
    1. The problem statement, all variables and given/known data
    An object stand in the height 500km from the surface of the Earth. What velocity should it have to become an earth satellite?

    2. Relevant equations
    a=v2/r

    3. The attempt at a solution
    v2=a*r=6,9*107=>x=8306m/S , but the solution is 7600m/S
     
  2. jcsd
  3. Feb 7, 2015 #2
    What's a? What's r? Watch units and you got your algebra wrong.
     
  4. Feb 8, 2015 #3

    mfb

    User Avatar
    2017 Award

    Staff: Mentor

    And what is x?

    I would expect an error at the value of "a" you used.
     
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