Figure 3: Left: MEMS+ model, note the 67 million μ long wire (or 67m) - Right: pendulum portrait phase. The pendulum portrait phase is a geometric representation of the trajectories of a dynamical system in the phase plane (angular velocity versus angular position). Each set of initial conditions is represented by a different curve, or point. For small swing angle and velocity, the curves are circles denoting a pure sinusoidal movement. The movement becomes more nonlinear at higher starting angles of the pendulum.

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