A dynamical structure having mass 20 kg is installed on the elastic foundation. This structure could be excited by a sinusoidal force of 20 N. From the frequency waveform of its output response, it is observed that the maximum steady-state amplitude X of 0.0012 m takes place when the time period T of the output response is 0.20 s. Determine the following: (i) The natural frequency, Wn (ii) The equivalent stiffness of the foundation (iii) The approx. damping ratio { of the foundation among the range of damping ratio, i.e. 0<
A dynamical structure having mass 20 kg is installed on the elastic foundation. This structure could be excited by a sinusoidal force of 20 N. From the frequency waveform of its output response, it is observed that the maximum steady-state amplitude X of 0.0012 m takes place when the time period T of the output response is 0.20 s. Determine the following: (i) The natural frequency, Wn (ii) The equivalent stiffness of the foundation (iii) The approx. damping ratio { of the foundation among the range of damping ratio, i.e. 0<
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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