MECHANICAL VIBRATIONS 3. Imagine a door which can swings into and out of a room. The door has a closer with a spring stiffnessof 71 N-m/rad and damping of 7.5 N-m-s/rad and mass moment of inertia of the door with respect tothe hinge is 20 kg-m?. If the door is held open and then let go from an angle of 50 degrees, how long willthe door continue to swing into and out of the room? How many times will it swings before it willclosed? Assume that the door is considered closed when the amplitude has decreased to 2.5 degrees.Assume that small angle approximation holds, such that sin(theta) = theta.

given data K = 71 N-m/radC = 7.5 N-ms/radIP = 20 kg-m2Aclosed = 2.5°θ = 50°

Answered: 3. Imagine a door which can swings into…

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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