A rígid steel bar is supported by three rods as shown. There is no strain in the rods before the load P is applied. After load Pis applied, the normal strain in rods (1) is 2120 μm/m. Assume initial rod lengths of L₁ = 1,250 mm and L2= 2,000 mm. Determine the normal strain in rod (2). (1) (2) Rigid bar 1325 μm/m O 1546 μm/m O 1790 μm/m 1712 μm/m 1435 μm/m L₂ (1)

Question 1: The piece of plastic is originally rectangular. Given LCD and LAD are 400 and 300 mm, respectively. If the plastic distorts as shown by the dashed lines, a) Determine the average normal strain that occurs along CD. b) Determine the average normal strain that occurs along AD. c) Determine the shear strain Yxy at corner C. 2 mm LCD 2 mm D LAD mm B 12 mm 3 mm mm

Problems: Stress (ksi) 53.2 1. Determine the ductility (u) of the material based on the stress- strain diagram (problem S5.1). 43.6 37.1 0.0013 0.0063 0.163 0.247 Strain (in/in)

At a point on the free surface of a machine component the strain rosette shown in the figure below