A tensile force acting on a rod of length 300 mm causes it to extend by 2 mm in the direction of the force. What is the strain? A steel rod has a length of 1.0 m and a constant diameter of 20 mm. What...

A tensile force acting on a rod of length 300 mm causes it to extend by 2 mm in the direction of the force. What is the strain?

A steel rod has a length of 1.0 m and a constant diameter of 20 mm. What will be its extension when subject to an axial tensile load of 60 kN if the modulus of elasticity of the material is 200 GPa?