Object 1 with m1 = 3.5 kg and Object 2 with m2 = 15 kg are separated by r = 0.18 m.  a)  Express the magnitude of the gravitational force F in terms of m1, m2, r, and the gravitational constant G.   b) Calculate the magnitude of F in N.

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Q: m, m2

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!