In 1686 Sir Isaac Newton published his work on the law of gravity in his Mathematical Principles of Natural Philosophy. | ||||||||
Newton's law of gravity states that every particle in the universe attracts every other particle with the force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.If the particles have masses m1 and m2 and are separated by a distance r, the magnitude of this gravitational force is | ||||||||
Where G is a universal constant called the universal gravitational constant, which has been measured experimentally. Its value in SI units is | ||||||||
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Monday, 29 July 2013
BASIC FACTS : 2. NEWTON'S LAW OF GRAVITY
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