An electric motor with a mass of 260 kg and a rotatingunbalance, is mounted near the end of a steel cantileverbeam. The beam is observed to vibrate violently at theoperating speed of 1200 rev/min of the motor. It is proposedto add a vibration absorber underneath the beam to reducethe vibration. It is intended to have the lower frequency ofthe combined system equal to 80 % of the operating speed ofthe motor.Determine the ratio of the absorber mass to the mass of the(а)motor.Find the mass and stiffness of the vibration absorber.(b)

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n electric motor with a mass of 260 kg and a rotating nbalance, is mounted near the end of a steel cantilever eam. The beam is observed to vibrate violently at the perating speed of 1200 rev/min of the motor. It is proposed o add a vibration absorber underneath the beam to reduce ne vibration. It is intended to have the lower frequency of ne combined system equal to 80 % of the operating speed of ne motor. etermine the ratio of the absorber mass to the mass of the notor. ind the mass and stiffness of the vibration absorber.

n electric motor with a mass of 260 kg and a rotating nbalance, is mounted near the end of a steel cantilever eam. The beam is observed to vibrate violently at the perating speed of 1200 rev/min of the motor. It is proposed o add a vibration absorber underneath the beam to reduce ne vibration. It is intended to have the lower frequency of ne combined system equal to 80 % of the operating speed of ne motor. etermine the ratio of the absorber mass to the mass of the notor. ind the mass and stiffness of the vibration absorber.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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