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 12 - Rotation of a Rigid Body - Exercises and Problems: 38


(a) $A\times B = 21$ (into the page) (b) $C\times D = 24$ (out of the page)

Work Step by Step

We can use the right-hand rule to determine if the cross-product is into the page or out of the page. (a) $A\times B = A~B~sin(\theta)$ $A\times B = (6)(5)~sin(45^{\circ})$ $A\times B = 21$ (into the page) (b) $C\times D = C~D~sin(\theta)$ $C\times D = (6)(4)~sin(90^{\circ})$ $C\times D = 24$ (out of the page)
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.