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Homework Help: How satellite falls

  1. Jan 22, 2010 #1
    1. The problem statement, all variables and given/known data

    A satellite falls freely towards the Earth starting from rest at distance R, much larger than the Earth's radius.Treating the Earth as a point mass M then
    T=C(R^3/GM)^0.5
    where G is gravitational constant
    By using equation of motion of the satellite, show that C=pi/2^(1.5)

    2. Relevant equations

    use GM/r^2=a


    3. The attempt at a solution
    I m not sure how the satellite falls ...why is pi in the constant C??
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Jan 22, 2010 #2

    ideasrule

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    Homework Helper

    What's T supposed to be?
     
  4. Jan 23, 2010 #3
    Sorry..T is the time taken by the satellite to reach the Earth
     
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