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# heres the wiki,
en.wikipedia.org/wiki/Double_pendulum

the double pendulum is chaotic for high amplitude oscillations. it's possible to compute the motion numerically using a computer. There's no analytical description so one has to simulate the path. A symplectic integrator would do nicely.
(, Sat 4 Oct 2008, 10:32, archived)
# With my appaling maths I would just
make a dubble pendulum and run a physics
simulation on it. Wonderful things, computers.
(, Sat 4 Oct 2008, 10:38, archived)
# don't come in here and soil us up with your differentiable manifolds
(, Sat 4 Oct 2008, 11:02, archived)
# i was talking to some physicists yesterday.
the problem in discussion was "does the temperature of a metal ball bearing affect the fall velocity through liquid nitrogen?"

The physicists went and did an inconclusive experiment and argued about it. I just said that the problem had been solved years ago and they just had to look up the answer.

They told me to stop spoiling it.
(, Sat 4 Oct 2008, 11:07, archived)