A simply supported wood beam (L = 5 m)with rectangular cross (b = 200 mm, h = 280 mm) section carries uniform load q = 6.5 kN/m includes the weight of the beam. The maximum flexural stress is approximately: (A) 8.7 MPa (В) 10.1 МPа (C) 11.4 MPa (D) 14.3 MPa A B

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