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A W8 × 40 wide-flange beam made of A-36 structural steel (E = 29 × 103 ksi) is simply supported, as shown in Fig

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A W8 × 40 wide-flange beam made of A-36 structural steel (E = 29 × 10³ ksi) is simply supported, as shown in Fig. P7.3-3. The beam is subjected to a couple M_A that produces a maximum deflection of 0.10 in. (a) What is the value of M_A? (b) What is the maximum flexural stress in the beam under this loading? Solve by integrating the second order differential equation for deflection, Eq. 7.8, and see Table D.1 for the cross-sectional properties of the beam.