8. Centripetal Forces & Gravitation
Satellite Motion: Speed & Period
10:06 minutes
Problem 13.57
Textbook Question
Textbook QuestionFIGURE P13.57 shows two planets of mass m orbiting a star of mass M. The planets are in the same orbit, with radius r, but are always at opposite ends of a diameter. Find an exact expression for the orbital period T. <IMAGE> Hint: Each planet feels two forces.
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