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.
1)
"\\sigma=4~GPa,"
2)
"\\varepsilon=0.04,"
3)
"D=1.4~GPa,"
4)
"E=6~GJ,"
5)
"\\dot E=0.8~GJ."
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