The bell-crank mechanism is in equilibrium for an applied load of F1 = 11 kN applied at A. Assume a = 250mm, b = 100mm, c = 90mm, and θ = 40°. Pin B is in a double-shear connection and has a diameter of 29 mm. The bell crank has a thickness of 31 mm. Determine the shear stress in pin B.

The assembly is used to support a distributed loading of w = 6.6 kN/m. The solid steel rod BC has a diameter of 13 mm and the steel pins at A, B and C have a diameter of 10 mm. The yield stress of the steel in tension is 250 MPa and in shear is 125 MPa. C 1.2 m 0.9 m 0.3 m Determine the factor of safety for the pin at B with respect to yielding? Input your answer to two decimal places.

1-103. The bar is supported by the pin. If the allowable tensile stress for the bar is (o)allow = 150 MPa, and the allowable shear stress for the pin is Tallow = 85 MPa, determine the diameter of the pin for which the load P will be a maximum. What is this maximum load? Assume the hole in the bar has the same diameter d as the pin. Take 1 = 6 mm and w = 50 mm.

F The shaft is loaded with two forces as shown and is fixed at A. The strength is defined as the maximum allowable force F that does not produce shear stress above the material's maximum al- lowable value of 4 ksi. Determine the strength. By what factor would the strength increase if the shaft diameter were doubled? (L₁ = 12 in., L₂ = 6 in., and d = 0.5 in.)

The solid circular rod has a cross-sectional area of 460 mm². It is subjected to a uniform axial distributed loading along its length of w= 8 kN/m. Two concentrated loads also act on the rod: P = 3 kN and Q = 5 kN. Determine the normal stress in the rod at x = 0.9 m. Assume a = 0.6 m and b = 1.0 m. B MPa a Answer: 0 = i b

Determine the maximum normal stress (in MPa) developed in the bar when it is subjected to a tension of P = 12 kN.

An axial force of 52 kN is applied to the assembly shown by means of rigid end plates. 5 mm 5 mm 20 mm 20 mm 5 mm 5 mm Steel core E = 200 GPa Brass shell E = 105 GPa 250 mm Determine the normal stress in the brass shell. The normal stress in the brass shell is MPа.

The rectangular bar is connected to the support bracket with a 19-mm-diameter pin. The bar width is w = 75 mm and the bar thickness is 20 mm. Each side of the bracket has the same dimensions as the bar. The average shear stress in the pin cannot exceed 120 MPa, the bearing stress in the bar cannot exceed 150 MPa, and the bearing stress in the bracket cannot exceed 150 MPa. Determine the maximum value of Pmax that can be supported by the structure. Answer: Pmax=