The seismic instrument is mounted on a structure which has a vertical vibration with a
Chapter 8, Problem 8/68(choose chapter or problem)
The seismic instrument is mounted on a structure which has a vertical vibration with a frequency of 5 Hz and a double amplitude of 18 mm. The sensing element has a mass and the spring stiffness is The motion of the mass relative to the instrument base is recorded on a revolving drum and shows a double amplitude of 24 mm during the steady-state condition. Calculate the viscous damping constant c. 8/68
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