Satellite Gravitational Forces

  • Thread starter HarleyM
  • Start date
  • #1
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Homework Statement



a 500 kg satellite experiences a gravitational force of 3000 N, while moving in a circular orbit around the earth.

a) Find the radius of the circular orbit
b)Find the Speed of the Satellite
c) Find the period of the orbit

Homework Equations



g=GM1M2/r2
Fc=Mv2/r
V=2∏r/T

The Attempt at a Solution



a)g=GM1M2/r2
Fnet = GM1M2/r2
r=√(6.67x10-11)(5.98x1024)(500)/3000 N)
r=8.15x106


b)3000 N= (500)V2/(8.15x106)
V=6994 m/s (25, 178 km/hr)

c) V= 2∏r/T
T=2∏r/V
T=7321.7 S (2.03 h)

Does everything look okay, Im really usure of my understanding of gravitational forces.. Thanks!


Fnet=MV2/r
 

Answers and Replies

  • #2
looks good to me
I didn't check the numbers but your working seems fine

is there anything specific that you don't understand about the gravitational force?
 
  • #3
56
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I cant think of anythin specifically that confuses me i just taught it to myself today and i want to make sure its all logical and im not breaking rules etc. when doing calculations.. Thank you for your help and confidence boost!
 

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