3/125 In a railroad classification yard, a 68-Mg freight car moving at 0.5 m/s at A encounters a retarder sec- tion of track at B which exerts a retarding force of 32 kN on the car in the direction opposite to mo- tion. Over what distance x should the retarder be activated in order to limit the speed of the car to 3 m/s at C? Ans. x = 53.2 m 150 m 3 m A B 4 (Vertical scale exaggerated) C
3/125 In a railroad classification yard, a 68-Mg freight car moving at 0.5 m/s at A encounters a retarder sec- tion of track at B which exerts a retarding force of 32 kN on the car in the direction opposite to mo- tion. Over what distance x should the retarder be activated in order to limit the speed of the car to 3 m/s at C? Ans. x = 53.2 m 150 m 3 m A B 4 (Vertical scale exaggerated) C
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
Related questions
Question

Transcribed Image Text:3/125 In a railroad classification yard, a 68-Mg freight car
moving at 0.5 m/s at A encounters a retarder sec-
tion of track at B which exerts a retarding force of
32 kN on the car in the direction opposite to mo-
tion. Over what distance x should the retarder be
activated in order to limit the speed of the car to 3
m/s at C?
Ans. x = 53.2 m
150 m
-x
A
T
3 m
Y
B
(Vertical scale exaggerated)
C
Problem 3/125
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