Question

which shape offers minimum buckling?

Answer 1

Answer:

In structural engineering, buckling is the sudden change in shape (deformation) of a structural component under load, such as the bowing of a column under compression or the wrinkling of a plate under shear. If a structure is subjected to a gradually increasing load, when the load reaches a critical level, a member may suddenly change shape and the structure and component is said to have buckled.[2] Euler's critical load and Johnson's parabolic formula are used to determine the buckling stress in slender columns.