1 - Dr. Ghandour Mechanics of Materials CE 207 Cal Poly...

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Dr. Ghandour Cal Poly State University Mechanics of Materials San Luis Obispo CE 207 HW # 8, 9 and 10 HW# 8 ( ) 70- A. Knowing that the spring at A is of constant k and that the bar AB is rigid, determine the critical load P cr . B. Knowing that the tensional spring at B is of constant k and that the bar AB is rigid, determine the critical load P cr . C. Two rigid bars AC and BC are connected as shown to a spring of constant k. knowing that the spring can act in either tension or compression, determine the critical load P cr for the system. (A) (C) (B) 71- If m= 150 kg, h = 500 mm, and the constant of each spring is k = 2.5 kN/m, determine the range of values of the distance d from which the equilibrium of the rigid rod AB is stable in the position shown. Each spring can act in either tension or compression. 72- The steel rod BC is attached to the rigid bar AB and to the fixed support at C. Knowing that G = 11.2 Msi, determine the diameter d of rod BC for which the critical load P cr of the
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1 - Dr. Ghandour Mechanics of Materials CE 207 Cal Poly...

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