A 40 kg fan has a rotation unbalance of magnitude of 0.05 kg.m. The fan is mounted on a beam which is specially treated to have a viscous damping. By the variation of the speed of the fan, the...

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Extracted text: A 40 kg fan has a rotation unbalance of magnitude of 0.05 kg.m. The fan is mounted on a beam which is specially treated to have a viscous damping. By the variation of the speed of the fan, the amplitude of the vibration varies too. What is the fan's steady state amplitude when it operates at 1000 r/min? Givens: E = 200 GPa, I = 1.3 x10-6 m, L = 1.2 m, damping ratio = 0.0617 Select one: O 9.7 mm 2 mm O 15 mm O 13.6 mm