A bar of copper and steel form a composite system, which is heated to a temperature of 40°C. The stress induced in the copper bar will be

According to Euler's column theory, the crippling load for a column length (l) hinged at both ends, is

When a body is subjected to a direct tensile stress (σ), the maximum normal stress is equal to the direct tensile stress.

On one side of a neutral axis of a beam, there is a tensile stress and on the other side of the beam there is a compressive stress.

The direct stress, across a principal plane, is known as principal stress.