Algodoo

This spring behave like a rope
Can ONLY pull not push
All script in postStep

Color code:
- Red - constant is 1 Nm
- Green - constant is 10000 Nm (Can be changed by _constant inside spring)

Controls:
- Right/Left - Crane arm
- Up/Down - control length 1m - 10m
(Limits can be changed by _min and _max inside spring)

Note: _force inside spring is readONLY variabile