10

FIG. 6.4.4 Response of a resonant system. The response of an elastic system excited by frequencies near its undamped resonance frequency varies with both the forcing frequency and the amount of damping. Damping from 0 to 1 times critical is shown.

quency—to the natural frequency of the object. Other important parameters are the resisting force (proportional to effective mass) and the damping ratio (proportional to the amount of energy dissipated through friction). Figure 6.4.4 shows the relation between the frequency ratio and the response of the system (no units given for response in this figure).

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