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Orbital radius vs period question

  1. May 24, 2010 #1
    1. The problem statement, all variables and given/known data

    a satellite has a period of T and orbital radius R. If you wish to increase the period to 8T what must the new orbital radius be. (answer= 4T, I just dont know how they got it)

    2. Relevant equations
    R1 cubed/ T1 squared = R2 cubed/ T2 squared

    3. The attempt at a solution
    The answer i got was 8
    Last edited: May 24, 2010
  2. jcsd
  3. May 24, 2010 #2


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    You've got 1. so far. 2 and 3?
  4. Nov 27, 2010 #3
    That sounds reasonable.

    Check calculation again.
  5. Nov 27, 2010 #4


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    Gold Member

    Yeeeeah. I think he may have handed that assignment in by now...
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