(b) A simply supported beam of span 8 m is subjected to a point load of 8 KN in the middle. The beam has a circular section of 40 mm diameter. Perform the following: (i) Draw the free body diagram of the beam; (ii) Draw the bending moment diagram; (iii) Determine the maximum bending stress. (c) Analyse the effect of increase in external load on the maximum bending stress for the system given in Question Q 3(b).

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Slope and Deflection

The slope in a deflected beam is described as an angle in radians made by the tangent of the section with the original axis of the beam. The deflection at any point on the axis of the beam is defined as the lateral displacement of the point before and after loading.