A unifrom steel wire of length 6 m and area of cross section ` 2 mm^(2) ` is elastically strectched through 3 mm. Calculate the energy stored in the wire. ` [Y_("steel") = 2xx 10^(11) N//m^(2)]`

Explanation

Data : L = 6 m , A = `2 mm^(2) ,= 2xx 10^(-6) m^(2) , Y = 2 xx 10^(11) N//m^(2)`
`((2xx 10^(11)) (2xx 10^(-6))(3 xx 10^(-3))^(2))/(2xx 6)`
0.3 J