Suppose the welded steel bracket shown in the figure is bolted underneath a structural-steel ceiling beam to support a fluctuating vertical load imposed on it by a pin and yoke. The bolts are ½ in coarse-thread SAE grade 5, tightened to recommended preload. The stiff nesses have already been computed and are kb = 4.94 Mlb/in and km = 15.97 Mlb/in.