An unbalanced small motor with me-1.2 kg.m is directly bolted to a machine with amass of 500 kg. The machine is attached to the floor using an isolator with k=75000 N/m,e=1850 Ns/m (Weight of the motor is neglected.)a) Determine that how much percent of the force is transmitted to the floor if motorturns with n-250 rpm.b) Determine the rotation speed of the motor corresponding to the damped naturalfrequency of the system.e) Determine the vibration displacement amplitude at the speed calculated in part b).

Answered: An unbalanced small motor with me-1.2…

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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Question

An unbalanced small motor with me-1.2 kg.m is directly bolted to a machine with a
mass of 500 kg. The machine is attached to the floor using an isolator with k=75000 N/m,
e=1850 Ns/m (Weight of the motor is neglected.)
a) Determine that how much percent of the force is transmitted to the floor if motor
turns with n-250 rpm.
b) Determine the rotation speed of the motor corresponding to the damped natural
frequency of the system.
e) Determine the vibration displacement amplitude at the speed calculated in part b).

Expert Solution

Step 1

Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you. If you want remaining sub-parts to be solved, then please resubmit the whole question and specify those sub-parts you want us to solve.

Write the given information.

Step 2 (a)

Write the expression of the angular velocity of the machine.

Write the expression of the natural frequency of the system.

Write the expression of the damping ratio.

Write the expression of the transmission ratio.

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