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Path Wordsso QUESTION 7 A single degree of freedom system is excited by a harmonic force...
path Wordsso QUESTION 7 A single degree of freedom system is excited by a harmonic force with amplitude 167 N at the frequency ratio 0.9. The amplitude of response is measured as 0.05 m. If the equivalent stiffness of the system is 12 kN/m, calculate the damping ratio of this system. Give your answer with 3 digits after the decimal point. Click Save and submit to save and submit. Click Save answers to save all answers e 9 0 * &
Answers
Given ! Force, Fos 1671. Frequency ratio, & cw = 0.9. con Amplitude , A = 0.05m K, stilfrey = 12 kN/m= 12000 N/m A= Folk √(1-8")² + (2 egr)" ls= Damping ratio . 0.05 = 167/12000 (1-0.2%)*+ (2x6x0-a)" 0.0139. 0.05= 0.19 + 3.2462 Samaring, 0.0361+ 3.24% 0.07728 = 0.04128 3.24 > lg = 0.113
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