Most recent change of Gravity
Edit made on September 12, 2014 by ColinWright at 22:19:27
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[[[>30 Gravity is a myth - the Earth sucks!
All masses attract each other. The strength of this gravitational force,
according to Newton, depends on the magnitude of the masses and the
inverse square of the distance between them.
Einstein improved the understanding of gravitational in his
General Theory of Relativity by postulating that masses bend or curve
the space-time continuum similar to a bowling ball resting on a
trampoline. Any object now moving in this space-time would travel
along a curved path.
[[[>40 Using this fact and the inverse square nature of the
law of gravitation lets us calculate the distance to the moon
using just a stopwatch, a pendulum, and a few observations. ]]]
Newton's 2nd law of motion implies that a mass in a
gravitaional gravitational field
would experience an acceleration. A simple pendulum is sufficient
to measure the acceleration due to gravity on the surface of the Earth.