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what does the law of universal gravitation explain. Consider an object that is free to accelerate and is acted on only by gravitational force. Universal Law of Gravitation - definition Newtons law of universal gravitation states that any two bodies in the universe attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
What Is Difference Between Coulomb S Law And Newton S Law Of Gravitation from physicsabout.com
Expressed in modern language Newtons universal law of gravitation states that every object in the universe attracts every other object with a force that is directed along a line joining them. That is the number we need to know in order to calculate the gravitational attraction between say two spheres of 1 kilogram each. As seen earlier g is defined as Fgm where Fg is gravitational force.
Universal about this law is that it is basic enough to apply to any place in the known universe.
Newtons place in the Gravity Hall of Fame is not due to his discovery of gravity but rather due to his discovery that gravitation is universal. That is the number we need to know in order to calculate the gravitational attraction between say two spheres of 1 kilogram each. The force is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. For this reason g 981 ms2 on Earths surface.
