These time histories correspond to damping ratios of 0, 0.1 and 0.5. (Recall that for oscillations to exist in the free reponse, the damping ratio must be less than one.) The most obvious influence of ...

A magnetic mass hangs on the end of a swinging rod. A movable copper plate damps the oscillations. The rod is connected to a rotational motion sensor, which can transmit the data to a computer for ...