A steel wire of 4.0 m is stretched through 2.0 mm. The cross - sectional area of the wire is
Channel: Doubtnut
Date: 2020-08-23

A steel wire of 4.0 m is 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 xx10^(11) Nm^(-2)` find (i) the energy density of the wire, (ii) the elastic potential energy stored in the wire.