Calculating Orbital Speed and Period for a Satellite in Circular Orbit

[mizzy]

Homework Statement

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

Homework Equations

a) v^2 = GM/r

b) T = (2pie) r/ v

c) F = GmM/r^2

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?

 

[rock.freak667]

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?

Part a) you are equating the centripetal force on the satellite, so the mass of the satellite cancels out. The rest look correct.

 

[mizzy]

ok. thanks.