Solve Problem if the moment M = 50 N • m is applied about the y axis instead of the x axis...

Solve Problem if the moment M = 50 N • m is applied about the y axis instead of the x axis. Here .

Problem

A shaft is made of a polymer having an elliptical cross-section. If it resists an internal moment of M = 50 N • m, determine the maximum bending stress developed in the material (a) using the flexure formula, where , (b) using integration. Sketch a three-dimensional view of the stress distribution acting over the cross-sectional area.