An engine is used to pull a train of two cars out of a mine. The floor of the mine slopes upward at an angle of 30°. Each car has a mass of 104 kg and normally travels without friction on the tracks. The engine can exert a maximum force of 1.5 · 105 N on car A. a. The engine first accelerates the cars from rest by exerting its maximum force. What is the acceleration of the cars ? b. Once the train has reached a reasonable speed, the engineer throttles back so that they continue at a constant speed. Now what force does the engine exert on car A? c. What is the tension in the massless, straight chain connecting cars A and B while they are travelling at a constant speed? d. If the engineer again throttles back so that the force exerted by the engine on car A decreases at the constant rate of 3N per second, how long before the train stops moving up the track? Assume the original speed was 3 meters per second.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
icon
Related questions
Question
7. An engine is used to pull a train of two cars out of a mine. The floor of the mine
slopes upward at an angle of 30°. Each car has a mass of 104 kg and normally travels
without friction on the tracks. The engine can exert a maximum force of 1.5 · 105 N
on car A.
a. The engine first accelerates the cars from rest by exerting its maximum force.
What is the acceleration of the cars ?
b. Once the train has reached a reasonable speed, the engineer throttles back so
that they continue at a constant speed. Now what force does the engine exert on
car A?
c. What is the tension in the massless, straight chain connecting cars A and B while
they are travelling at a constant speed?
d. If the engineer again throttles back so that the force exerted by the engine on
car A decreases at the constant rate of 3N per second, how long before the train
stops moving up the track? Assume the original speed was 3 meters per second.
A
В
e=30°
Transcribed Image Text:7. An engine is used to pull a train of two cars out of a mine. The floor of the mine slopes upward at an angle of 30°. Each car has a mass of 104 kg and normally travels without friction on the tracks. The engine can exert a maximum force of 1.5 · 105 N on car A. a. The engine first accelerates the cars from rest by exerting its maximum force. What is the acceleration of the cars ? b. Once the train has reached a reasonable speed, the engineer throttles back so that they continue at a constant speed. Now what force does the engine exert on car A? c. What is the tension in the massless, straight chain connecting cars A and B while they are travelling at a constant speed? d. If the engineer again throttles back so that the force exerted by the engine on car A decreases at the constant rate of 3N per second, how long before the train stops moving up the track? Assume the original speed was 3 meters per second. A В e=30°
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 3 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON