Question

A satellite of mass 220 kg is launched from a site on Earth's equator into an...

A satellite of mass 220 kg is launched from a site on Earth's equator into an orbit at 210 km above the surface of Earth.

(a) Assuming a circular orbit, what is the orbital period of this satellite? _____ s

(b) What is the satellite's speed in its orbit? _____ m/s

(c) What is the minimum energy necessary to place the satellite in orbit, assuming no air friction? _____ J

Homework Answers

Answer #1

The gravitational force provides the centripetal force for the satellite in the orbit. We use this to find the required period and the speed as shown below. Use energy conservation principle to find the energy necessary to place the satellite in orbit

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