1. Each of the five struts shown to the right consists of a solid steel rod...

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1. Each of the five struts shown to the right consists of a solid steel rod of length of 900 mm and Young's modulus of E = 200 GPa. The axial compressive force is Po= 7.5 kN. (a) If the diameter of rod (1) is 20 mm, determine the factor of safety with respect to buckling. (b) determine the required diameter for each of the rods (2) - (5) if the factor of safety must be the same as for rod (1). Ans: (a) FS = 2.55; d₂ = 28.3 mm, d3 = 14.14 mm, d4 = 16.73 mm, d5 = 20 mm. 900 mm | P₁ = 7.5 kN (1) (2) (3) (4) (5) 1. Each of the five struts shown to the right consists of a solid steel rod of length of 900 mm and Young's modulus of E = 200 GPa. The axial compressive force is Po= 7.5 kN. (a) If the diameter of rod (1) is 20 mm, determine the factor of safety with respect to buckling. (b) determine the required diameter for each of the rods (2) - (5) if the factor of safety must be the same as for rod (1). Ans: (a) FS = 2.55; d₂ = 28.3 mm, d3 = 14.14 mm, d4 = 16.73 mm, d5 = 20 mm. 900 mm | P₁ = 7.5 kN (1) (2) (3) (4) (5)