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Q. Consider two planets of mass m and 2m, respectively, orbiting the same star in circular orbits. The more massive planet is 3.5 times as far from the star as the less massive one. What is the ratio F1 : F2 of the gravitational forces exerted on the star by the two planets?

Q. A 75 , 33--long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 ball of clay traveling horizontally at 2.6 hits and sticks to the very bottom tip of the rod.

To what maximum angle, measured from vertical, does the rod (with the attached ball of clay) rotate?

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Category:- Physics
Reference No.:- M9271849

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