Figure shows a stepped flat bar carrying three concentrated loads. Let P = 200 N, L­1 = 18...

Figure shows a stepped flat bar carrying three concentrated loads. Let P = 200 N, L­1 = 180 mm, L2 = 80 mm, and L3 = 40 mm. Compute the maximum stress due to bending and state where it occurs. The bar is braced against lateral bending and twisting. Note that the length dimensions in the figure are not drawn to scale.

FIGURE Stepped flat bar for Problem