Determine the bending stress at B in MPa. [M = 100 kN.m; Ix 0.1907 x 103 m: 9= 0.0975 m] 300 mm LA 30 mm 150 mm 150 mun O 25.8 O 120.5 O 51,1 O 70.4

Q4

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The beam cross-section shown in the Figure Q6 is subjected to a resultant internal vertical shear force V = 80000 N and moment M = 7000 N*m. For all numerical answers, answer to within 3 decimal places. Note that adatpive marking has been used to consider the method mark. 12 mm 60 mm † 12 mm 80 mm 20 mm y 20 mm Figure Q6: A cross-section of I-beam with given dimensions and resultant vertical shear force V and moment M (a) Determine the overall 2nd moment of area I, of the cross-section with regard to the neutral axis.