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1. |
A steel bar 5 m x 50 mm is loaded with 250, 000 N. If the modulus of elasticity of the material is 0.2 MN/mm and Poisson's ratio is 0.25, the change in the volume of the bar is : |
A. | 1.125 cm |
B. | 2.125 cm |
C. | 3.125 cm |
D. | 4.125 cm |
Answer» D. 4.125 cm | |