Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 7 - Newton's Third Law - Exercises and Problems - Page 178: 18

Answer

(a) A force of 20 N pulls forward on the ice. (b) A force of 21 N pulls forward on the rope.

Work Step by Step

(a) Let $F_i$ be the force that pulls forward on the ice. We can find the magnitude of $F_i$. Let $m_i$ be the mass of the ice. $F_i = m_i~a$ $F_i = (10~kg)(2.0~m/s^2)$ $F_i = 20~N$ A force of 20 N pulls forward on the ice. (b) Let $F_r$ be the force that pulls forward on the rope. We can find the magnitude of $F_r$. Let $m_i$ be the mass of the ice. Let $m_r$ be the mass of the rope. $F_r = (m_i+m_r)~a$ $F_r = (10~kg+0.50~kg)(2.0~m/s^2)$ $F_r = 21~N$ A force of 21 N pulls forward on the rope.
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.