(a) In Fig. 12.31 what are the magnitude and direction of the net gravitational force exerted on the 0.I00-kg uniform sphere by the other two uniform spheres? The centers of all three spheres are on the same line.
(b) According to Newton's third law, does the O.I00-kg sphere exert forces of the same magnitude as your answer to part (a), but in the opposite direction, on each of the other two spheres?

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10.0 kg 5.00 kg 0.100 kg 0.600 m 0.400 m