A prismatic bar has length L = 2m and a circular cross-section with diameter d = 50 mm. A tensile load is applied which causes thhe bar to extend by ∂ = 1.4 mm.
a) Find the normal strain.
b)If the elastic modulus is 200 GPa, find the applied aal tensile load P.
I got part a) to equal 0.14 (200*10^9 * ((1.4*10^-3)/2)
Thank you for your help