W x 2) A simplified sketch of a seismic device could be represented similar to a harmonic base excitation problem as sho

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W X 2 A Simplified Sketch Of A Seismic Device Could Be Represented Similar To A Harmonic Base Excitation Problem As Sho 1 (32.93 KiB) Viewed 22 times

W x 2) A simplified sketch of a seismic device could be represented similar to a harmonic base excitation problem as shown on the right, k where the amplitude of the base motion (Y) represents the magnitude of the earthquake we want to measure. The device has a mass m = 35kg m = 35 kg, stiffness of k = 2 x 105N/m and produces a damping ratio < = 0.08. During an earthquake, measurements indicated a frequency of w = 188 rad/s, with a double Structure amplitude of 2X = 2.06 x 10-4m. Use this information and determine the magnitude y(t) = Y sin(wt) (amplitude) of the earthquake, Y.