A steel plate of dimensions 20 mm x 2 mm is bent into a circular arc of radius 2 m by applying end couples. If E = 200 GPa, find the end couples applied and the maximum stress in the bar. A hollow...

A steel plate of dimensions 20 mm x 2 mm is bent into a circular arc of radius 2 m by applying end couples. If E = 200 GPa, find the end couples applied and the maximum stress in the bar.

A hollow circular section, of external diameter 200 mm, and thickness 20 mm, is to be used as a beam. If the maximum stress permissible in the material is 120 MPa, find the maximum BM that this section can carry.