Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 7 - Section 7.6 - Potential-Energy Curves - Conceptual Example: 7.1

Answer

The answer is below.

Work Step by Step

Each of the graphs in the book have a horizontal line on them, which represents the total energy. The roller coaster can never go above these peaks, for the mechanical energy is said to be conserved. In graph a, the horizontal line is above the whole curve, so the roller coaster goes from point a to point d. In diagram b, the horizontal line intersects the graph at about point c. Thus, once it gets to point c, the roller coaster will go back and forth between point c and the initial point where the horizontal line intersects the curve. In diagram c, the horizontal line intersects the graph at about point b. Thus, once it gets to point b, the roller coaster will go back and forth between point b and the initial point where the horizontal line intersects the curve.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.