Dimensions:

Problem Statement:

A cantilever beam has a cross$-$section shaped as a sector of a circle. It is supported at A and loaded with a concentrated load of $F=778N$ and a concentrated moment of $M=161N^{**}m.$ The dimensions of

the beam are given in the table above. Find the normal stresses at points $D,E,$ and G in the cross$-$section, at the locations along the beam's length where it experiences its maximum positive and maximum

negative bending moments.

Reactions:

$R_A=$

$M_A=$

Moment of Inertia:

$I_{NA}=$

Flexural Normal Stresses:

$($Denote tensile stresses with positive values; compressive stresses with negative values$)$