PHYSICS CHAPTER 8 : Universal Gravitation

And, if the planet were twice the distance from the sun, the force would be only one-quarter as strong. Figure 8-5 illustrates these relationships. Because the force depends on 1/d2, it is called an inverse square law. Newton's Use of His Law of Universal Gravitation. Newton applied his inverse square law to the motion of the planets about the sun. ................
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