1036Civil EngineeringMedium
A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2 MN/mm2 and Poisson’s ratio is 0.25, the change in the volume of the bar is________?
A2.125 cm3
B4.125 cm2
C3.125 cm3
D1.125 cm3
Correct answer
C. 3.125 cm3
Explanation
The correct answer is 3.125 cm3.