What is a beam supported at onle one end?

A beam supported at only one end is referred to as a cantilever beam. This type of beam extends horizontally and is fixed at one end while the other end is free to extend out into space. Cantilever beams are commonly used in construction and engineering applications, such as balconies and bridges, where they can provide support and overhang without additional support on the free end. The fixed end must be designed to resist bending moments and shear forces due to loads applied along the beam.