This is a non-lingo question:
I want to make a pendulum. the motion should involve
physical principles. It should be possible to change
the lenght of the cord for example. If somebody did this
before, please help me with the formula.
i tried:
T = 2*pi *sqrt(cordLength/g)
but how do i get the coordinates of the swinging body?
there is a very cool example at:
http://physics.weber.edu/amiri/director/dcrfiles/energy/PendulumS.dcr
ralf schmidt.
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