Originally Posted By: paul
If you don't like the 1D simplification, then just replace the u-bends with springs. I've been treating them the same as springs all the way through.

if your using springs then how are you getting more acceleration out of a spring.

More than what? Throw a mass against a spring and it applies a force. The average force depends on the mass, speed and spring constant.

That force is exactly the same as the average of the component of force in the longitudinal direction for a mass going through a U-bend that takes the same amount of time to turn around.

Edited by kallog (06/24/10 01:10 PM)