1. For the simply supported beam shown in Fig. 1, calculate the support reactions, write the shear force and bending moment expressions for each section, and sketch the shear force and bending moment...

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Extracted text: 1. For the simply supported beam shown in Fig. 1, calculate the support reactions, write the shear force and bending moment expressions for each section, and sketch the shear force and bending moment diagrams indicating all salient points. Given: a = (1.1 + S/20) m. (21 + S/5) kN 1.5 kN/m (18 + S/8) kNm В 2m 4m 2m 2m Figure 1