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Engineering and Tech / Engineering Mechanics: Statics 14 / Chapter 8 / Problem 8-104

Engineering Mechanics: Statics | 14th Edition | ISBN: 9780133918922 | Authors: Russell C. Hibbeler

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Solved: The 20-kg motor has a center of gravity at G and

Chapter 8, Problem 8-104

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QUESTION:

The 20-kg motor has a center of gravity at G and is pin connected at C to maintain a tension in the drive belt. Determine the smallest counterclockwise twist or torque M that must be supplied by the motor to turn the disk B if wheel A locks and causes the belt to slip over the disk. No slipping occurs at A. The coefficient of static friction between the belt and the disk is

\(\mu_{\mathrm{s}}\) = 0.3.

Questions & Answers

QUESTION:

The 20-kg motor has a center of gravity at G and is pin connected at C to maintain a tension in the drive belt. Determine the smallest counterclockwise twist or torque M that must be supplied by the motor to turn the disk B if wheel A locks and causes the belt to slip over the disk. No slipping occurs at A. The coefficient of static friction between the belt and the disk is

\(\mu_{\mathrm{s}}\) = 0.3.

ANSWER:

Step 1 of 5

First, we'll isolate and draw the free-body diagram of disk B.

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