A horizontal load Pis applied to an assembly consisting of two inclined bars, as shown in the figure. The cross-sectional area of bar (1) is 1.55 in.?, and the cross-sectional area of bar (2) is 1.75 in.?. The normal stress in either bar may not exceed 23 ksi. Determine the maximum load P that may be applied to this assembly. Assume dimensions of a = 17.0 ft, b = 6.5 ft, and c = 11.5 ft. (1) a B P (2)
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- Solve the preceding problem if F =90 mm, F = 42 kN, and t = 40°MPa, An arm A BC lying in a horizontal plane and supported at A (see figure) is made of two identical solid steel bars AB and BC welded together at a right angle. Each bar is 22 in. long. (a) Knowing that the maximum tensile stress (principal stress) at the top of the bar at support A due solely to the weights of the bars is 1025 psi, determine the diameter d of the bars. (b) If the allowable tensile stress is 1475 psi and each bar has a diameter d = 2.0 in,, what is the maximum downward load P that can be applied at C(in addition to self-weightA simply supported beam is subjected to point load P at mid-span. The normal stress on an element at mid-span is known to be ??x= 1.5 ksi. Determine the element stresses lilt is rotated through angle ? = 450• Show these stresses on a sketch of an element oriented at that angle.
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