# Simple Springs

13 May 2014A demo of a simple spring attached to two points.

Click and drag the points to move them.

This can also be used to make a rope simulation.
Click and drag the points to move them.
The physics is very simple. The following vector equation is all you need to calculate the force.

Where k is the spring stiffness, x is the spring extension, û is the unit direction vector between the two nodes,
c is the damping constant and v is the relative velocity of the two nodes.