Question: A 110kg machine is mounted on a foundation having a stiffness of 2x106 N/m and known to have damping. When operating at 150rad/sec the

A 110kg machine is mounted on a foundation having a stiffness of

A 110kg machine is mounted on a foundation having a stiffness of 2x106 N/m and known to have damping. When operating at 150rad/sec the machine is subject to a harmonic force of magnitude 1500N. The steady state amplitude of oscillation of the machine is measured as 1.9mm. i) What is the damping ratio ? (0.144) ii) What is the damping coefficient B ? (4273 N/m s-1)

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