University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 5 - Applying Newton's Laws - Problems - Exercises - Page 163: 5.45

Answer

(a) $F_N = 62~N$ (b) $F_N = 30~N$

Work Step by Step

(a) $\sum F = \frac{mv^2}{r}$ $F_N-mg = \frac{mv^2}{r}$ $F_N = \frac{mv^2}{r}+mg$ $F_N = \frac{(1.60~kg)(12.0~m/s)^2}{5.00~m}+(1.60~kg)(9.80~m/s^2)$ $F_N = 62~N$ (b) $\sum F = \frac{mv^2}{r}$ $F_N+mg = \frac{mv^2}{r}$ $F_N = \frac{mv^2}{r}-mg$ $F_N = \frac{(1.60~kg)(12.0~m/s)^2}{5.00~m}-(1.60~kg)(9.80~m/s^2)$ $F_N = 30~N$
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.