Physics-Please help

I have a question about the International Space Station-Its been orbiting earth at 350km-If the radius of the earth is 6,370 km, what is the period of orbit for the Space Station?

Secondly, if it was moved to a geosynchronous orbit, what would the new altitude of the station be?

If youcould just direct me or give me a clue how to solve these, I would appreciate it. I think something is missing from these questions in order to solve them. If you could even verify that, I'd appreciate it

Thank you

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asked by Julie
  1. No, you have all you need.

    consider centripetal force, that has to equal gravity.

    GMe*m/(re+h)^2=m w^2(re+h)

    w= Find w. Then, w=2PI/Period, solve for period.

    For the geosynchronous orbit, you know period, find angular veloicty in radians/sec, and then find h.

  2. Thank you-I'll try it and get back with a possible answer maybe tomorrow

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    posted by Julie

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