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A round bar, 800 mm long, CSA 15 mm^2 experiences an applied tensile load of 6 kN and stretches elastically by 3 mm.

a) Calculate the tensile stress in the bar.

My answer 400 MN/m^2

b) Calculate the strain on the rod.

My answer 0.00375 or 0.375%

c) Calculate the Modulus of Elasticity of the material.

My answer 106.67 GN/m^2