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Re: non-Hookeish springs



And this is what allows the construction of the so-called Wilberforce
pendulum in which, if the rotational inertia and the mass are adjusted
just so, you can see energy transfer between two modes of oscillation
(longitudinal and torsional). It's a wonderful, thought-provoking physics
toy.

Allen

On Tue, 5 Nov 1996, Leigh Palmer wrote:

with amplitude is difficult (this is a sensitive test). I made some Hooke
springs once by winding brass wire on a conical mandrel when I was in
grad school. I can't recall why that works, but the extension of a
helical spring involves torsion in the wire of which it is made, and that
is at the heart of the explanation as I recall.