Chapter 05, Problem 013 The figure shows an arrangement in which four disks are

Question

Chapter 05, Problem 013 The figure shows an arrangement in which four disks are suspended by cords. The longer, top cord loops over a frictionless pulley and pulls with a force of magnitude 89.2 N on the wall to which it is attached. The tensions in the shorter cords are Ta 67.2 N, T2 44.2 N, and T 7.53 N. What are the masses of (a) disk A, (b) disk B, (c) disk C and (d) disk D? Dl (a) Number (b) Number (c) Number (d) Number Palco 1 R2000-2017Dohn M sons, Inc. All Rights Reserved A Division of lohn Wiley & Sons, unc. Version 4.22.2.9

Explanation / Answer

(a)
89.2 N = mg + 67.2 N
m = (89.2 - 67.2 N) / (9.81 m/s²)
m = 2.24 kg

(b)

67.2 N = mg + 44.2 N
m = (67.2 - 44.2 N) / (9.81 m/s²)
m = 2.34 kg

(c)
44.2 N = mg + 7.53 N
m = (44.2 - 7.53 N) / (9.81 m/s²)
m = 3.74 kg

(d)
7.53 N = mg
m = (7.53 N) / (9.81 m/s²)
m = 0.78 kg

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