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In the gear-pulling assembly shown the square-threaded screw AB has a mean radius of 15

Vector Mechanics for Engineers: Statics | 10th Edition | ISBN: 9780077402280 | Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek ISBN: 9780077402280 491

Solution for problem 8.74 Chapter 8

Vector Mechanics for Engineers: Statics | 10th Edition

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Vector Mechanics for Engineers: Statics | 10th Edition | ISBN: 9780077402280 | Authors: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek

Vector Mechanics for Engineers: Statics | 10th Edition

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Problem 8.74

In the gear-pulling assembly shown the square-threaded screw AB has a mean radius of 15 mm and a lead of 4 mm. Knowing that the coefficient of static friction is 0.10, determine the couple that must be applied to the screw in order to produce a force of 3 kN on the gear. Neglect friction at end A of the screw.

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PY 205 with Daniel Dougherty Week 1 Chapter 1 1/12/2016  Theory – broader, more detailed and can give quantitatively testable predictions, often with great precision  Law – certain, concise but general statements about how nature behaves  Principle- less general statements o Scientific laws are descriptive because they describe how mature behaves  Uncertainty and percent uncertainty o Ratio of uncertainty to the measured value X 100 to make it a percent o Ex: 8.8 +/- .1cm .1/8.8 X 100 = 1%  Significant figures o 0 is a placeholder o Ex: 80  one significant figure since 0 does not count o RULE: number of significant figures in the last number should be the s

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Chapter 8, Problem 8.74 is Solved
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Textbook: Vector Mechanics for Engineers: Statics
Edition: 10
Author: Ferdinand Beer, E. Russell Johnston Jr., David Mazurek
ISBN: 9780077402280

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In the gear-pulling assembly shown the square-threaded screw AB has a mean radius of 15