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Wolfram Technology Conference
Apps accompany Phil Todd's presentation: "Symbolic mechanics: from optimal trebuchets to simple chaotic machines"
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As you change the relative masses, the pivot point adapts to the optimal location.
k is the ratio of the long arm of the trebuchet to the short arm. Notice that wheels allow the counterweight to drop more directly, and yield a faster throw.
Simple Chaos Machine
Changing the spring constant (k) illustrates the onset of chaos in this simple mechanism.
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