These are simulators for some dynamical systems using the fourth order Runge-Kutta integrator.

1 Swinging Atwood's machine

Swinging Atwood’s machine

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FIGURE 1

2 Double pendulum

Double pendulum

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FIGURE 2

3 Driven Toda oscillator

Driven Toda oscillator

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FIGURE 3

4 Driven Duffing oscillator

Driven Duffing oscillator

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FIGURE 4