Question

A wire increases by 10–3 of its length when a stress of 1 × 108
Nm-2 is applied
to it. Calculate Young’s modulus of material of the wire

Answer 1

Most metals deforms proportional to imposed load over a range of loads. Stress is proportional to load and strain is proportional to deformation as expressed with Hooke's Law. Modulus of Elasticity, or Young's Modulus, is commonly used for metals and metal alloys and expressed in terms 106 lbf/in2, N/m2 or Pa.