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The gravitational force of a star on an orbiting planet 1 is F1. Planet 2, which...

The gravitational force of a star on an orbiting planet 1 is F1. Planet 2, which is four times as massive as planet 1 and orbits at twice the distance from the star, experiences gravitational force F2.What is the ratio F2F1? You can ignore the gravitational force between the two planets.

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