Angular velocity of a satellite

[crazuiee]

Homework Statement

A 5.00x10^3kg is orbiting the Earth in a circular path. The height of the satellite above the Earth is 8.00x10^2km what is the magnitude of the angular velociy?
Mass of earth: 5.98x10^24kg
radius of Earth plus satellite:6380800m
G:6.674x10^-11

Homework Equations

Gm1m2/r^2=v^2/r

The Attempt at a Solution

I know the satellite isn't involved I keep getting 1.23x10-3 but it's not any of the choices for multiple choice. Can anyone explain how to do this problem

 

[the pro]

do u mean with g the gravitacional forces

 

[crazuiee]

G the gravitational constant

 

[the pro]

try it with this gm1m2/r2=v2/r then get into this gm1m2 x r = v2 x r2

 

[tiny-tim]

Welcome to PF!

Hi crazuiee! Welcome to PF!

(try using the X² and X₂ tags just above the Reply box )

Gm1m2/r^2=v^2/r

Leave out m₂, and that's correct

(But did you add just 800 metres? )

Show us your full calculations if you want us to check for the mistake.

 

[the pro]

oh right about m2 tim dident notice that