what is the maximum deflection of the bumper?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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A rail road bumper is designed as a spring in parallel with a viscous damper. What
is the bumper's damping coefficient such that the system has a damping ratio of
1.25, when the bumper is engaged by a rail car of 20,000 kg mass. The stiffness
of the spring is 200 kN/m. If the rail car engages the bumper, while traveling at a
speed of 20m/s, what is the maximum deflection of the bumper?
poooo
m
Transcribed Image Text:A rail road bumper is designed as a spring in parallel with a viscous damper. What is the bumper's damping coefficient such that the system has a damping ratio of 1.25, when the bumper is engaged by a rail car of 20,000 kg mass. The stiffness of the spring is 200 kN/m. If the rail car engages the bumper, while traveling at a speed of 20m/s, what is the maximum deflection of the bumper? poooo m
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