Yup. Massless springs, and it's parabolic with no people on the bridge. Also, it's not only the 12th mass that gives 0 tension. Anywhere I place people the tension goes to zero. I'm reviewing my code right now to see what can be changed. Thanks a lot for your help! I'll keep you updated.
So I'm working on assignment dealing with creating a simulation of a bridge made with springs and masses. **THIS IS NOT A HOMEWORK PROBLEM (I just want some explanation)**
When I calculate the tension on each of the springs, I find that the springs towards the middle have the least tension on...
Homework Statement
An observer in an inertial reference frame S sees two cameras flash simultaneously. The cameras are 800 m apart. He measures that the first flash occurs at four coordinates given by X1=0, Y1=0, Z1=0 and T1=0, and that the second flash occurs at four coordinates given by...