Is Work Done by a Satellite Related to its Mass and Displacement?

[labview1958]

Homework Statement

Homework Equations

What is the work done by a satellite moving around the Earth at constant altitude. Work done = Force x displacement. The satellite has a mass and displacement. Should it have work?

The Attempt at a Solution

 

[tiny-tim]

hi labview1958!

Work done = Force x displacement.

no NO NO!

work done = force "dot" displacement