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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Determine the natural frequencies and mode shapes of the 3-DOF system shown in Fig. P9.15. Let m1 = m2 = m and m3 = 2m; and let k1 = k and k2 = 2k. Sketch the three mode shapes. (Note that mode 1 is a rigid-body mode; that is, ω1 = 0.)

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