Q4 The two-member frame is subjected to the distributed loading shown. Determine the average normal stress and average shear stress acting at sections a-a and b-b. Member CB has a square cross section of 35 mm on each side. Take w = 8 kN/m. 4 m 3 m B W Q5 The piece of rubber is originally rectangular and subjected to the deformation shown by the dashed lines. Determine the average normal strain along the diagonal DB and side AD. 3 mm- 400 mm 300 mm- 2 mm x