Explanation Given information : The force F is 80 N. The coefficient of static friction of μ s is 0.40. The mean diameter ( d ) of the square threaded screw is 25 mm. The diameter ( L ) of the lead is 3 mm. Determine the angle ϕ s of static friction using the formula. ϕ s = tan − 1 μ s (I) Determine the lead angle θ using the formula. θ = tan − 1 ( L 2 π ( d 2 ) ) (II) Determine the compressive force in the column using the formula. M = [ W ( d 2 ) tan ( ϕ s + θ ) ] F l = [ W ( d 2 ) tan ( ϕ s + θ ) ] (III) Here, the distance of force F is l . Conclusion: Substitute 0.40 for μ s in Equation (I). ϕ s = tan − 1 ( 0.40 ) = 21.80 ° Substitute 3 mm for L and 25 mm for d in Equation (II). θ = tan − 1 ( 3 2 π ( 25 2 ) ) = 2

Engineering Mechanics: Statics & Dynamics (14th Edition)

14th Edition

ISBN: 9780133915426

Author: Russell C. Hibbeler

Publisher: PEARSON

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Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial …

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Chapter 8.4, Problem 69P

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The compressive force in the column.

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Chapter 8 Solutions

Engineering Mechanics: Statics & Dynamics (14th Edition)

Ch. 8.2 - P81. Determine the friction force at the surface...Ch. 8.2 - P82. Determine M to cause impending motion of the...Ch. 8.2 - P83. Determine the force P to move block B.Ch. 8.2 - P84. Determine the force P needed to cause...Ch. 8.2 - F81. Determine the friction developed between the...Ch. 8.2 - F82. Determine the minimum force P to prevent the...Ch. 8.2 - Prob. 3FP Ch. 8.2 - F84. If the coefficient of static friction at...Ch. 8.2 - F85. Determine the maximum force P that can be...Ch. 8.2 - F86. Determine the minimum coefficient of static...

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