An electric motor, of mass 20 kg and operating speed 1350 rpm, is placed on a fixed-fixed steel beam. The motor has a rotating unbalance of 0.1 kg.m. The amplitude of vibration of the beam under steady-state operation of the motor is suppressed by attaching an undamped vibration absorber under the motor, as shown in the figure below. Design the absorber such that the amplitude of the absorber mass is less than 4 cm and find the mass ratio. Hint: For rotating unbalance the Force Fo %3D moew? а. H = 0.125 b. µ = 0.2 С. H = 0.1 d. H = 0.175
An electric motor, of mass 20 kg and operating speed 1350 rpm, is placed on a fixed-fixed steel beam. The motor has a rotating unbalance of 0.1 kg.m. The amplitude of vibration of the beam under steady-state operation of the motor is suppressed by attaching an undamped vibration absorber under the motor, as shown in the figure below. Design the absorber such that the amplitude of the absorber mass is less than 4 cm and find the mass ratio. Hint: For rotating unbalance the Force Fo %3D moew? а. H = 0.125 b. µ = 0.2 С. H = 0.1 d. H = 0.175
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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