How much load is needed to elongate a steel wire to 0.5 %of its original length ? The diameter of the wire is 2mm and youngest modulus of the material of the wire is 20×10^10 N/m^2
Given:
ε=0.005\varepsilon=0.005ε=0.005
r=1 mm=10−3 mr=1\:\rm mm=10^{-3}\:\rm mr=1mm=10−3m
E=20∗1010 N/m2E=20*10^{10}\:\rm N/m^2E=20∗1010N/m2
The Hooke's law says
Hence, the load
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