Explain the spring-ball model of the elastic behavior of solids.

(N/A) We know that in a solid,each atom or molecule is surrounded by neighboring atoms or molecules.
These are bonded together by interatomic or intermolecular forces and stay in a stable equilibrium position.
When a solid is deformed,the atoms or molecules are displaced from their equilibrium positions,causing a change in the interatomic distances.
When the deforming force is removed,the interatomic forces tend to drive them back to their original positions,and the body regains its original shape and size.
The restoring mechanism can be visualized by taking a model of a spring-ball system as shown in the figure. Here,the balls represent atoms and the springs represent interatomic forces.
If you try to displace any ball from its equilibrium position,the spring system tries to restore the ball back to its original position.
Thus,the elastic behavior of a solid can be explained in terms of the microscopic nature of the solid.