In rectangular columns (cross-section b x h), the core is a

A cantilever carrying a uniformly distributed load W over its full length is propped at its free end such that it is at the level of the fixed end. The bending moment will be zero at its free end also at

Stress in a beam due to simple bending, is

When equal and opposite forces applied to a body, tend to elongate it, the stress so produced, is called

For a channel section, the shear centre lies at a distance of