Simple (non-compound) Pendulum Simulation?

[Jim Witte]

Hi,

   Does anyone have a simulation of a simple pendulum I could look  
at?  I'm doing a research project on schama-transfer between a  
graphical and textual simulation, and need one (actually one that has  
a fan at one end that can be turned on and off by the user, but that  
shouldn't be hard to add)

Thanks,
Jim Witte
jswitte at bloomington.in.us

Indiana University CS