Bar (1) has a cross-sectional area of 0.75 in.². If the stress in bar (1) must be limited to 39 ksi, determine the maximum load P that may be supported by the structure. D P A 6 ft O 18.61 kips O 17.55 kips O 11.10 kips O 21.00 kips O 22.39 kips B (1) 4 ft C

A simple pin connected truss is loaded and supported as shown. The truss is constructed from three aluminum members, each having a cross sectional area of A = 1220 mm ^2. Assume a = 1.4 m, b = 8.9 m, and c = 3.6m. If P = 60kN and Q = 80kN determine the normal stress in each member.

2. A replacement disc consists of the tube Cwith larger diameter of 4 cm, the cylindrical core B with the diameter of 2 cm and two relatively rigid discs on both ends. The disc replacement placed between vertebrae is under compressive force of 400N. The corresponding moduli of elasticity are Ec=10MPA and EB=20MPa. Determine the stress in the tube A and the core B. F Rigid parts 1cm C 2om 4cm F (Answer: OB = 509.3KPA, oc = 254.6KPA) 254.6KРа) %3D

Two solid cylindrical rods (1) and (2) are joined together at flange B and loaded as shown. If F₁ = 13 kips, F₂ = 34 kips, and the normal stress in each rod must be limited to 22 ksi, determine the minimum diameter d₁ required for rod (1). A (2) d₁ F₂ B C O 1.087 in. O 0.823 in. O 0.541 in. O 0.867 in. O 1.003 in. d₂