Gravitational force, Speed, and period of a Satellite.

  • Thread starter Imuell1
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  • #1
Imuell1
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Homework Statement


A satellite that has a mass of 300 kg moves in a circular orbit 5.00 X 107 m above Earth's surface. (a) What is the gravitational force on the satellite? (b) What is the speed of the satellite? (c) What is the period of the satellite?



Homework Equations


Fg= GMEm/(r+rE
T2= [4pi2/G(ME+m)]*(r+rE)3


The Attempt at a Solution


Fg= 38N
T=37 hours
V=9572517 m/h

I think the gravitational force might be right but the speed and period seem to be ridiculously too large.
 

Answers and Replies

  • #2
Dweirdo
174
0
37 is not so much :D
a broadcasting satellite ,which has period of 24 hours around earth(like the Earth around it self!) has a distance of 3.6*10^7 meters from the surface of the Earth AFAIK.
But didnt get the same V as You did,did You write T as seconds?(37*60*60
EDIT1:
Oh I did, didn't see Your units ,You better solve it with seconds, and not m/h
EDIT2:
How did the mass of the satellite get to the equation of period?
 
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