A steel bar is 10 mm diameter and 2 m long. It is stretched with a force of 20 kN and extends by 0.2 mm. Determine the stress and strain.

Four stress elements are shown below. All members have the same value for E (Young's Modulus) and v (Poisson's ratio). Rank the members from largest to smallest absolute value of the normal strain in the y direction. • View Available Hint(s)

A copper rod with a diameter of 19 mm, modulus of 110 GPa, and a Poisson’s ratio of 0.35 is subjected to tension within the elastic region. Determine the force ( in N) that will produce a reduction of 0.003 mm in the diameter.

Shown is the stress-strain curve developed from the tension test of a metal alloy bar. The specimen used to develop the stress-strain curve has a round cross-section with a diameter of d = 7 mm and a gauge length of L = 370 mm. Determine the load that must be applied to the specimen to stress the specimen to it's 0.2% offset yield. Express your answer in kN to the nearest whole kN. Your written solution must also include the length of the specimen when stressed to the 0.2% offset yield stress. σ (MPa) 700 600 500 400 300 200 100 0 0.02 0.04 0.06 0.08 0.10 0.002 0.004 0.006 0.008 0.010 € (mm/mm) P d