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Author(s): Gregory L. Vogt, EdD

Law of Gravitation

In the example shown, “G” is a gravitational constant; m1 is the mass of Earth, and m2 is the mass of a second object (in this case, a ball on Earth’s surface). 

The term “r2” refers to the radius between the center of the Earth and the center or the second object, squared. Force is increased if either or both masses in the equation are increased.