A fixed-fixed steel beam, of length 5 m, width 0.5 m, and thickness 0.1 m, carries an electric motor of mass 75 kg and speed 1200 rpm at its mid-span, as shown in Fig.. A rotating force of magnitude 5000N is developed due to the unbalance in the rotor of the motor. A. Find the amplitude of steady-state vibrations by disregarding the mass of the beam, assuming negligible damping. B. What will be the amplitude if the mass of the beam is considered? C. Discuss that how the amplitude of vibration can be reduced in both cases Fo wt

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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A fixed-fixed steel beam, of length 5 m, width 0.5 m, and thickness 0.1 m, carries an
electric motor of mass 75 kg and speed 1200 rpm at its mid-span, as shown in Fig.. A
rotating force of magnitude 5000N is developed due to the unbalance in the rotor of
the motor.
A. Find the amplitude of steady-state vibrations by disregarding the mass of the
beam, assuming negligible damping.
B. What will be the amplitude if the mass of the beam is considered?
C. Discuss that how the amplitude of vibration can be reduced in both cases
Fo
wt
2.
Transcribed Image Text:A fixed-fixed steel beam, of length 5 m, width 0.5 m, and thickness 0.1 m, carries an electric motor of mass 75 kg and speed 1200 rpm at its mid-span, as shown in Fig.. A rotating force of magnitude 5000N is developed due to the unbalance in the rotor of the motor. A. Find the amplitude of steady-state vibrations by disregarding the mass of the beam, assuming negligible damping. B. What will be the amplitude if the mass of the beam is considered? C. Discuss that how the amplitude of vibration can be reduced in both cases Fo wt 2.
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