A machine of mass 112.7 kg is mounted on four parallel springs each of stiffness 3.2 x 10³ N/m. When the machine operates at 58.0 Hz, the machine's steady state amplitude is measured as 0.5 mm. What is the magnitude of force transmitted to the foundations of the machine at this speed? The damping in the system is negligible. (Express answers to 3sf) Answer: 640 x

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