Orbital speed & time required

[wowdusk]

Homework Statement

the solar maximum mission satellite was placed in a circular orbit about 150 miles above earth. Determine (a) the orbital speed of the satellite and (b) the time required for 1 complete revolution

Homework Equations

The Attempt at a Solution

 

[3.211k]

But you haven't shown an attempt yet! Here's where I would start:

The force of gravity between the satellite and the earth provides the centripetal force.
Fg = Fc
What should we do from here?

 

[RoryP]

try thinking about newtons laws of motion and applying one of them in particular radially =]

 

[wowdusk]

am i looking for angular velocity of velocity tangent to its orbit