A composite beam is constructed by bolting four plates to four 60 60 12-mm angles as
Chapter 5, Problem 5.22(choose chapter or problem)
A composite beam is constructed by bolting four plates to four 60 60 12-mm angles as shown. The bolts are equally spaced along the beam, and the beam supports a vertical load. As proved in mechanics of materials, the shearing forces exerted on the bolts at A and B are proportional to the first moments with respect to the centroidal x-axis of the red-shaded areas shown, respectively, in parts a and b of the figure. Knowing that the force exerted on the bolt at A is 280 N, determine the force exerted on the bolt at B.
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