1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Orbital speed please clarify!

  1. Jul 23, 2010 #1
    1. The problem statement, all variables and given/known data
    A satellite of mass 600kg is in a circular orbit about the earth at a height above the earth equal to the earth's mean radius. Find:
    a) the satellite's orbital speed
    b) the period of its revolution
    c) graviational force acting on it

    2. Relevant equations
    a) v^2 = GM/r

    b) T = (2pie) r/ v

    c) F = GmM/r^2

    3. The attempt at a solution
    for part a, is the satellites orbital speed dependent on the mass of the earth??? Do I use mass of earth? or the satellite?
  2. jcsd
  3. Jul 23, 2010 #2


    User Avatar
    Homework Helper

    Part a) you are equating the centripetal force on the satellite, so the mass of the satellite cancels out. The rest look correct.
  4. Jul 23, 2010 #3
    ok. thanks.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Orbital speed please clarify!