Each of three blocks shows in figure has a mass 3 kg. The wire connecting blocks

Each of three blocks shows in figure has a mass 3 kg. The wire connecting blocks A and B has area of cross-section `0.005 cm^(2)` and Young's modulus of elasticity ` Y = 2 xx 10 ^(11) N//m^(2)` . Neglect friction. Find the elasticity potential energy stored per unit volume in wire connecting blocks A and B in steady state `(Taken g = 10 m//s^(2))`