Determine the shear stress at point B on the web of the cantilevered strut section a-a if P1 = 2.5 kN P2 = 5.7 kN and a = 45 mm. Express your answer in MPa. P1 P2 250 mm 250 mm -300 mm a a 20 mm 70 mm 20 mm B

h.w 2 Problems: 1. The cantilever truss in Figure is hinged at D and E. Find the force in each member. 1000 N Answer: FAB 2000 N tension FAC 1732.05 N compression FBC=866.02 N compression FBD = 2500 N tension Fco 2020.72 N tension FCE 3175.42 N compression

anwser 2nd part

The beam shown here is made of wood with an allowable shear stress of τall = 1100 psi. If PB = 5 kips, determine the maximum allowable force PC that can be applied on the structure before the beam fails in shear.[LAB= 2 ft, LBC= 2 ft, LCD= 1.5 ft, b = 1.25 in., h = 7 in.]     Determine the maximum value of the first moment of area (Q) for the beam. (in^3) Determine the maximum allowable force at C (PC) that can be applied on the structure before it fails in shear. (kips)