Question

A tensile force of 200N applied to a steel wire of lenght 2m and cross sectional area 0.3mm³ extends it by 0.5cm. calculate the; 1). Tensile stress. 2). Tensile strain. 3). Young's modulus. 4). Strain energy. 5). Strain energy per unit volume.

Answer 1

1)

$\sigma=4~GPa,$

2)

$\varepsilon=0.04,$

3)

$D=1.4~GPa,$

4)

$E=6~GJ,$

5)

$\dot E=0.8~GJ.$