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 - Problems: 13d

Answer

1kg

Work Step by Step

Looking at Disk D, we have to find all the forces acting on it. We have T3 pulling up and then the weight of Disk D is pulling downwards with a force of Md*g. Since the DIsk is not moving, it has no acceleration and so the net force on it (F=ma) is 0. This means that: 0 = T3 - Md*g and since g = 9.8 then Md = 1kg
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