The bell-crank mechanism is in equilibrium for an applied load of P = 34 kN. Assume that a = 200 mm, b = 135 mm, and 0 = 57°. The pin at B has a diameter of d = 15 mm, and the bell crank has a thickness of t = 6 mm. Calculate the average shear stress in the pin at В. (1) C F1 Bell crank В B Support bracket

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Equilibrium and Support Reactions

Civil engineers deal with structures that are composed of several members connected or with individual members such as beams and columns. To analyze such structures, the condition of statics must be applied. Under the static condition, the members are considered to be in equilibrium under the action of forces, that is, the members are assumed to be having negligible velocity.