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Homework Help: Orbital radius vs period question

  1. May 24, 2010 #1
    1. The problem statement, all variables and given/known data
    a satellite has period T and orbital radius R. If you wish to increase the period to 8T what must the new orbital radius be? (answer is 4R, I just dont know how to get it)

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. May 24, 2010 #2


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    Homework Helper

    First think of the relationship between orbital radius and the period.

    (Centripetal force = gravitational force of attraction)
  4. May 24, 2010 #3
    Last edited by a moderator: Apr 25, 2017
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