Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 6 - Force and Motion-II - Questions - Page 139: 3a

Answer

The frictional force remains the same.

Work Step by Step

Initially, force 1 is not enough to overcome the force of static friction between the box and the ground. When $F_{2}$ increases, friction is not effected because the block isn't moving.
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