For protection, the barrel barrier is placed in front of a bridge pier. The relationship between the force and deflection of the barrier is as given in the plot. For a car weighing 4000 lb and travelling at 50 mph as it first impacts the barrier, find the penetration of the car into the barrier. Note: One interpretation of Up = f F. dr is that work is the area under the force-deflection curve. F (lb) F=90(10) ¹/2 -x (ft)

For protection, the barrel barrier is placed in front of a bridge pier. The relationship between the force and deflection of the barrier is as given in the plot. For a car weighing 4000 lb and travelling at 50 mph as it first impacts the barrier, find the penetration of the car into the barrier. Note: One interpretation of Up = f F. dr is that work is the area under the force-deflection curve. F (lb) F=90(10) ¹/2 -x (ft)

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.79P: The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a)...

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