3 a precision grinding machine is supported on an isolator that has a
3- A precision grinding machine is supported on an isolator that has a stiffness of 1 MN/m and a
viscous damping constant of 1 kN-s/m. The floor on which the machine is mounted is subjected
to a harmonic disturbance due to the operation of an unbalanced engine in the vicinity of the
grinding machine. Find the maximum acceptable displacement amplitude of the floor if the
resulting amplitude of vibration of the grinding wheel is to be restricted to 106 m. Assume that
the grinding machine and the wheel are a rigid body of weight 5000 N. (20 Marks)
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