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3. A steel cantilever beam 16 ft and 8 inches in length is subjected to a concentrated load of 320lbs acting at the free

3. A steel cantilever beam 16 ft and 8 inches in length is subjected to a concentrated load of 320lbs acting at the free end of the bar. The beam is of rectangular cross section, 2 inches wide by 3 inches deep. Determine the magnitude of the maximum bending stress of the beam.

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