Newtons Law of Gravitation says that the magnitude F of the force exerted by a body of
Chapter 3, Problem 20(choose chapter or problem)
Newtons Law of Gravitation says that the magnitude F of the force exerted by a body of mass m on a body of mass M is F GmM r 2 where G is the gravitational constant and r is the distance between the bodies. (a) Find dFydr 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 Nykm when r 20,000 km. How fast does this force change when r 10,000 km?
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