This problem concerns the properties of circular orbits for a satellite of mass m orbiting a planet of mass m in an almost circular orbit of radius r. in doing this problem, you are to assume that the planet has an atmosphere that causes a small drag due to air resistance. "small" means that there is little change during each orbit so that the orbit remains nearly circular, but the radius can change slowly with time. the following question will ask about the net effects of drag and gravity on the satellite's motion, under the assumption that the satellite's orbit stays nearly circular. use g if necessary for the universal gravitational constant. consider the work done on the system a. increase b. decrease c. stay the same d. vary in a more complex way than is listed here