Wednesday

April 23, 2014

April 23, 2014

Posted by **cb** on Sunday, March 15, 2009 at 2:59am.

thnks

(a) Find the distance r to geosynchronous orbit.

Apply Kepler's third law. T^2=((4pi^2)/(GM_E))r^3

Substitute the period in seconds, T = 86,400 s, the gravity constant G = 6.67 multiplied by 10-11 kg-1 m3/s2, and the mass of the Earth, ME = 5.98 multiplied by 1024 kg. Solve for r.

T^2=((4pi^2)/(GM_E))r^3

- physics -
**drwls**, Sunday, March 15, 2009 at 3:14amWhat equation are you using? You should be using Kepler's third law, and setting the satellite period to 23 hours 56 minutes (1 sidereal day)

Or check the derivation here:

http://en.wikipedia.org/wiki/Geostationary

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