Chris Johnson wrote:
> [...]
> 
> -[in your formula k would be E*A]-
> Yes, assuming that the spring was a bungee-cord or something. Obviously for
> a curly spring, the function of force is a somewhat more complicated
> function of E and A...

Actually it would not be a function of E at all because a helical spring 
works by torsion deformation.

Christoph

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