Question: Question 5 . A 1 1 0 kg machine is mounted on an elastic foundation of stiffness 2 1 0 6 N m . When

Question 5.
A 110 kg machine is mounted on an elastic foundation of stiffness 2106Nm. When operating
at 150rads, the machine is subjected to a harmonic force of magnitude 1500 N . The steady
state amplitude of the machine is measured as 1.9 mm .
Find
the frequency ratio
the amplitude ratio or the magnification factor
What is the damping ratio of the foundation?
[Ans: damping ratio =0.142]
Question 5 . A 1 1 0 kg machine is mounted on an

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