Final answer:
The equation uz=2Eγ[z2+ν(x2+y2)−L2] represents a uniform axial extension along the z-axis in the theory of elasticity.
Step-by-step explanation:
The given equation is uz=2Eγ[z2+ν(x2+y2)−L2], which represents a uniform axial extension along the z-axis. This equation is derived from the theory of elasticity, which defines the relationship between strain and stress in a material. In this equation, uz represents the displacement along the z-axis, E represents the Young's modulus, γ represents the shear modulus, (x, y, z) are the coordinates, and ν represents the Poisson ratio.