College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 4 - Force and Motion - Learning Path Questions and Exercises - Exercises - Page 136: 27


$a).$ Angle of the ball should be backwards from vertical. $b).$ $0.51m/s^{2}$

Work Step by Step

a). The angle of the ball is backward from vertical. As the RV starts moving or accelerating forwards, the ball moves backward due to inertia. b). The ball makes $3^{\circ}$ with vertical. Thus, by both vertical and horizontal components, $Tsin\theta=ma$ $Tcos\theta=mg$ or, $tan\theta=\frac{a}{g}$ $a=gtan\theta=9.8\times tan3^{\circ}=0.51m/s^{2}$
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