A planet of mass M orbits a star in a circular orbit of radius R, in orbital period T. What would be the orbital period of another planet, orbiting at radius R, but having mass 2M?
Added by Karen L.
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This is due to the fact that the gravitational force between the star and the planet provides the centripetal force that keeps the planet in orbit. The formula for the orbital period T of a planet is given by Kepler's third law: T^2 = (4π^2/GM) * R^3 where: - Show more…
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