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Period of orbit

  • #1
Consider a satellite, mass=85 kg, in a circular orbit about Earth. Calculate the period of the satellite given a radius r of its orbit of 2.04 x 10^7 m.

I used T^2= (4pi^2/ GM)r^3
Plugging in G= 6.67 x 10^-11
M= 85 kg
r= 2.04 x 10^7 and solving for T gave 7.69 x 10^15 s.
This wasn't right...
 

Answers and Replies

  • #2
2,209
1
Pretty sure you use the mass of the earth, not the satelite, since it is whats providing the centripetal acceleration.

http://www.glenbrook.k12.il.us/gbssci/phys/Class/circles/u6l4c.html [Broken] for more info.
 
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