Universal
Law of Gravity
Newton discovered
that the
force of gravity is dependant on the mass of the two objects and the
distance between them. He also discovered that there is a
universal constant of nature that factors in to the amount of gravity
acting on two objects. That constant, represented as G, is equal
to 6.672 × 10-11
m3 /(kg sec2). Using this information,
Newton derived the following formula: Force of Gravity (Fg) = (G
(mass1) (mass2)) / distance^2.
Earth in Orbit
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Information on this page is taken from
http://www.astronomynotes.com/gravappl/s3.htm.