A structural steel rod has a radius r(=10 mm) and a length l(=1 m). When a force F(= 100 kN
Channel: Doubtnut
Date: 2020-08-30

A structural steel rod has a radius r(=10 mm) and a length l(=1 m). When a force F(= 100 kN) is applied, it stretches it along its length. Young's modulus of elasticity of the structural steel is `2.0xx10^(11) Nm^(-2)`. What is the elastic energy density of the steel rod ?