Question

A steel wire 4 m in length is stretched through 2 mm the cross section area of the wire is 2 mm^2 if young's modulus of steel is 2 into 10 raise to 11 newton per metre square find the energy density of wire

Answer 1

stretched through $2.0\; mm.$ The cross sectional area of the wire is $2.0 \;mm^2$ . If young's modulus of steel is $2.0 \times 10^{11}\;N/m^2$ the energy density of wire is