Question: The rectangular cross section shown in Fig. 3 is subjected to a bending moment of M = 1 2 k N - m . Determine

The rectangular cross section shown in Fig. 3 is subjected to a bending moment of M=12kN-m. Determine the normal stress developed at each corner of the section, and specify the orientation of the neutral axis.
Fig.3. Beam cross-section
The rectangular cross section shown in Fig. 3 is

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