A viscously damped spring-mass system is forced harmonically at the undamped natural frequency (w/w n = 1).
Question:
A viscously damped spring-mass system is forced harmonically at the undamped natural frequency (w/wn = 1). If the damping ratio ζ is doubled from 0.1 to 0.2, compute the percentage reduction R1 in the steady-state amplitude. Compare with the result R2 of a similar calculation for the condition w/wn = 2. Verify your results by inspecting Fig. 8/11.
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Related Book For 
Engineering Mechanics Dynamics
ISBN: 9781118885840
8th Edition
Authors: James L. Meriam, L. G. Kraige, J. N. Bolton
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