(a) Explanation Given information: The mass of the tube is m = 20 kg . The coefficient of static friction between the tube and the dock is μ s = 0.30 . The value of a is 0. Calculation: The impending occurs at point C for sliding and rotation where the angle is large. For slip at C , the force P must pass through the intersection of W and C . Show the free-body diagram of the portion AC as in Figure 1. Find the angle ϕ s using the relation. tan ϕ s = μ s Substitute 0.30 for μ s . tan ϕ s = 0.30 ϕ s = 16.7 ° Find the largest angle θ as follows; θ = 90 ° − ϕ s Substitute 16.7 ° for ϕ s . θ = 90 ° − 16.7 ° = 73.3 ° Take moment about point C (b) To determine Find the largest angle θ and the magnitude of force P for which the tube will slide horizontally.

12th Edition

ISBN: 9781259977244

Author: BEER

Publisher: MCG

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Chapter 8.1, Problem 8.39P

(a)

To determine

Find the largest angle θ and the magnitude of force P for which the tube will slide horizontally.

(b)

To determine

Find the largest angle θ and the magnitude of force P for which the tube will slide horizontally.

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Chapter 8.1, Problem 8.38P

Chapter 8.1, Problem 8.40P

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Vector Mechanics for Engineers: Statics

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