(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 6000 kg lunar lander is in orbit 10 km above the surface of the moon. It needs to move out to a 100 km-high orbit in order to link up with the mother ship that will take the astronauts home.

How much work must the thrusters do?

2. Relevant equations

U_s = -GMm/r

F_g = GMm/r^2

3. The attempt at a solution

I tried to calculate the difference in force between the two orbits and then calculate the change in energy to get the work, but I've had no luck.

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# Homework Help: Object in Orbit Around Earth

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