A Planet of Mass M Orbits a Star in a Circular

question 42

Multiple Choice

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?

• A) 0.71T
• B) T
• C) 1.4T
• D) 2T
• E) 0.50T

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