How many laws of gravity did Sir Isaac Newton propound?

gk9760

Isaac Newton had 1 law of gravity. http://en.wikipedia.org/wiki/Newton's_law_of_universal_gravitation Jun 06 09, 7:37 AM

queproblema

He formulated three laws of motion, but only one of gravity. He stated: "Every point mass attracts every other point mass by a force pointing along the line intersecting both points. The force is directly proportional to the product of the two masses and inversely proportional to the square of the distance between the point masses." "Newton's law [of universal gravitation] has since been superseded by Einstein's theory of general relativity, but it continues to be used as an excellent approximation of the effects of gravity. Relativity is only required when there is a need for extreme precision, or when dealing with gravitation for very massive objects." http://en.wikipedia.org/wiki/Newton%27s_laws_of_motion http://en.wikipedia.org/wiki/Universal_gravitation Jun 06 09, 10:57 AM