The simply supported beam is built up from three boards by nailing them together as shown. If , determine the maximum allowable spacing s of the nails to support that load, if each nail can resist a shear force of .
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The double t-beam is fabricated by welding the three plates together as shown.
Determine the shear stress in the weld necessary to support a shear force of 97 kN.
Two steel plates are fastened together using four bolts. The boltseach have a shear modulus of 8.9 1010 Pa and a shear strength of6.0 108 Pa. The radius of each bolt is 0.9 cm. Normally, the boltsclamp the two plates together and the frictional forces between theplates keep them from sliding. If the bolts are loose, then thefrictional forces are small and the bolts themselves would besubject to a large shear stress. What is the maximum shearing forceF on the plates that the four bolts can withstand?in N please show all work
Suppose three blocks are in contact with one another on a frictionless, horizontal surface as shown. A horizontal force F is applied to m1. Take m1 = 2.00 kg, m2 = 3.00 kg, m3 = 4.00 kg, and F = 18.0 N. (a) Draw a separate free-body diagram for each block. (b) Determine the acceleration of the blocks. (c) Find the resultant force on each block. (d) Find the magnitudes of the contact forces between the blocks. (e) You are working on a construction project. A coworker is nailing up plasterboard on one side of a light partition, and you are on the opposite side, providing “backing” by leaning against the wall with your back pushing on it. Every hammer blow makes your back sting. The supervisor helps you put a heavy block of wood between the wall and your back. Using the situation analyzed in parts (a) through (d) as a model, explain how this change works to make your job more comfortable.