Algodoo

That's a rather interesting and unusual method of altering the spring length based on the angular velocity of a circle! Just curious, why you did it that way rather than the more common method of directly altering the spring length by adding/subtracting a small value to the length when keys are pressed?

Now that you mention it, using the spring onKey event may be the simplest way to do it. Maybe next time I will try that.

Congratulations on recently becoming the top commenter.

Top commenter? Is that a euphemism for being verbose?