4.12. A damped single degree of freedom mass-spring system is excited atresonance by a harmonic forcing function which has an amplitude of 80 N.It was observed that the steady state amplitude of the forced vibration is6 mm. It was also observed that when the frequency of excitation is threetimes the natural frequency of the system, the amplitude of the steadystate vibration becomes 1 mm. Determine the stiffness coefficient k and thedamping factor 5.

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Answered: A damped single degree of freedom…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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A damped single degree of freedom mass-spring system is excited at resonance by a harmonic forcing function which has an amplitude of 80 N. It was observed that the steady state amplitude of the forced vibration is 6 mm. It was also observed that when the frequency of excitation is three times the natural fre- quency of the system, the amplitude of the steady state vibration becomes 1 mm. Determine the stiffness coefficient k and the damping factor š.

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