Posted by **ma** on Tuesday, October 12, 2010 at 11:13pm.

What is the angular velocity in radian per second of a satellite that has an orbital velocity of 9000 m.s^-1, orbiting at a distance of 6500 km from the center of the earth

- physics -
**drwls**, Wednesday, October 13, 2010 at 12:58am
The angular velocity is V/R. The length units of V and R must be the same.. let's say meters.

Therefore

angular velocity = (9000 m/s)/6.5*10^6 m

= 1.38*10^-3 radians/s

That satellite is a rather low one, since the Earth's radius is 6378 m, only 122 km (75 miles) less than the orbit radius. Satellites do not last long in such low orbits.

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