> >I forget what law this is... it's someone's "spring law" or something
like
> >that. Learned it in high school Physics but I forget the guy's name...
>
> Hook's law I & II

Yeah... that sounds familiar now you mention it...

OK, so the force exterted by the spring/elastic/whatever is simply some
multiple of the amount of distortion the thing undergoes? Cool - that's the
way I coded it! (Was initially inverse-square, like gravity... but I wasn't
sure that was physically correct...)

Thanks.
Andrew.

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