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Find the lightest S-shape for the beam shown if the working stress in bending is 120 MPa. What is the maximum bending stress in

Find the lightest S-shape for the beam shown if the working stress in bending is 120 MPa. What is the maximum bending stress in the beam selected? 40 kN/m A 4 m FIG. P5.51 B -2.4 m- C

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