A steel rod with a constant diameter of 25 mm and a length of 500 mm is subject to an axial tensile load of 50 kN. If this results in an extension of 0.25 mm, what is the modulus of elasticity? An...

A steel rod with a constant diameter of 25 mm and a length of 500 mm is subject to an axial tensile load of 50 kN. If this results in an extension of 0.25 mm, what is the modulus of elasticity?

An aluminium alloy has a tensile strength of 200 MPa. What force is needed to break a bar with a cross-sectional area of 250 mm2 ?