Mechanical Vibration Analysis Example Problem | Response of a damped system under a harmonic force

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A machine of mass 25kg is placed on an elastic foundation. A sinusoidal force of magnitude 25N is applied to the machine. A frequency sweeps reveals that the maximum steady-state amplitude of 1.3mm occurs when the period of response is 0.22s. Determine the equivalent stiffness and damping ratio of the foundation.
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In which book is this question found? please

williamcruz