A rectangular bar having width w = 5.00 in. and thickness t = 1.00 in. is subjected to a tension load P, as shown in the figure. The magnitudes of the normal and shear stresses on plane AB must not exceed 21 ksi and 9 ksi, respectively. Determine the maximum load P that can be applied without exceeding either stress limit. Assume a = 3 and b = 6. P B Answer: P = i kips

A horizontal load P is applied to an assembly consisting of two inclined bars, as shown in the figure.  The cross-sectional area of bar (1) is 1.30 in.2, and the cross-sectional area of bar (2) is 1.75 in.2.  The normal stress in either bar may not exceed 24 ksi.  Determine the maximum load P that may be applied to this assembly.  Assume dimensions of a=14.5 ft, b=9.0 ft, and c=14.5 ft.  Determine the allowable force F1 in member (1) and the allowable force F2 in member (2).

A prismatic bar is subjected to an axial forcethat produces a tensile stress σθ = 65 u MPa and ashear stress τθ = 23 u MPa on a certain inclined plane(see figure). Determine the stresses acting on all facesof a stress element oriented at θ = 30°, and show thestresses on a sketch of the element.

Question 1 A steel bar with length of 4.5 m is subjected to forces as shown in the figure: 1. Determine the stress in the square section 2. Determine the elongation of each sections Take the modules of elasticity for the bar is 200 GPa Circular section Square section Circular section Diameter =15 mm Area =20 mm*20mm Diameter =10 mm 50 kN 35 kN 30 kN 45 kN 1 m 2 m 1.5 m