Problem #2: What force must be applied to a steel bar, 25.4 mm square and 610 mm long to produce an elongation of 0.4064 mm. E of steel is 200,000 MPa Problem #3: How much will a nominal 203.2 mm x 203.2 mm Douglas fir post, 3.65 m long, shorten under an axial load of 200 KN. E of Douglas fir is 11032 MPa Problem #4: An aluminum alloy rod 10 mm in diameter and gage length of 50 mm is subjected to an axial load of 6 kN. Given E = 70000 MPa and G = 26303 MPa. Determine the axial and transverse strain in the rod. Determine the change in gage length and change in diameter.