What will be the amplitude of steady-state vibration of the fan in Prob. 22-53 if the angular

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What will be the amplitude of steady-state vibration of the fan in Prob. 22-53 if the angular velocity of the fan blade is 18 rad/s?


Prob. 22-53

The fan has a mass of 25 kg and is fixed to the end of a horizontal beam that has a negligible mass.The fan blade is mounted eccentrically on the shaft such that it is equivalent to an unbalanced 3.5-kg mass located 100 mm from the axis of rotation. If the static deflection of the beam is 50 mm as a result of the weight of the fan, determine the angular velocity of the fan blade at which resonance will occur.

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