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TDOF - Quiz 2 m1 2 Wi W = 1,14k wew, = 0944 W 4.56m = -0-420 k1 k2 x1(t) Figure shows the spring-mass

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TDOF - Quiz 2 m1 2 Wi W = 1,14k "wew, = 0944 W 4.56m = -0-420 k1 k2 x1(t) Figure shows the spring-mass damper system of two degree of freedom with free vibrations. If m = m, m = 2.5m, C = C = C3 = 2c, k = k, k = 2.5k and k = 3k. a) Determine the undamped natural frequencies and principal mode shapes of the system which normalized to the first mass. Sketch the mode shapes. 000 m2 k3 x2(t)

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