Fundamentals of Physics Extended (10th Edition)

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

Chapter 5 - Force and Motion-I - Questions - Page 116: 9a

Answer

Force F is accelerating 20kg of force.

Work Step by Step

Force F is the only force acting in the system. It pulls the total mass of the blocks because they are all connected by cords. The individual cords have their own tension forces but force F is pulling all of the mass in the system.
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