📉 Multi-Stage Pendulum Isolation: Transmissibility, Resonance and Roll-Off (2D)

Side view of a payload hung from a chain of pendulum stages under moving ground. Set the number of stages, the pendulum length, damping, the ground frequency and amplitude, and watch the payload motion shrink stage by stage. The transmissibility curve, the resonance and the high-frequency slope are computed, with four in-page numerical checks. A vibration-isolation companion to the 3D platform.