Question

(a) What is the speed of a 231 kg satellite in an approximately circular orbit 646 km above the surface of Earth?

b) What is the period? min Suppose the satellite loses mechanical energy at the average rate of 2.0 ✕ 105 J per orbital revolution. Adopt the reasonable approximation that the trajectory is a "circle of slowly diminishing radius".

c) Determine the satellite's altitude at the end of its 1700th revolution. m

d) Determine its speed at this time. m/s

(e) Determine its period at this time. min

(f) What is the magnitude of the average retarding force on the satellite? N

g) Is angular momentum around Earth's center conserved for the satellite and the satellite Earth system (assuming that system is isolated)?

The angular momentum of the satellite is conserved.

The angular momentum of the satellite Earth system is conserved.

Both are conserved.

Neither are conserved.

Answer 1