Answer: Newtons Law of Gravitation says that the magnitude of the force exerted by a
Chapter 3, Problem 20(choose chapter or problem)
Newtons Law of Gravitation says that the magnitude of the force exerted by a body of mass on a body of mass is where is the gravitational constant and is the distance between the bodies. (a) Find and explain its meaning. What does the minus sign indicate? (b) Suppose it is known that the earth attracts an object with a force that decreases at the rate of 2 Nkm when r 20,000 km. How fast does this force change when r 10,000 km?
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