When an external force deforms a solid, internal restoring forces are developed in the body giving rise to stress and strain. Define stress and strain.

When an external force deforms a solid, internal restoring forces are developed in the body giving rise to stress and strain. Draw the stress-strain diagram and mark the positions of elastic limit and the regions of elastic and plastic behaviors.

When a mass is suspended on a metallic wire, the length of the wire increases slightly. Name and state the law that relates to the restoring force developed in the wire and its deformation.

Elasticity is the property of a body by which it regains its original state on the removal of the deforming force. The figure given below shows the stress-strain curve for a given material. What are the Youngs modulus and approximate yield strength for this material?