(Solved): (b) A cross section bar made of steel with notches is as shown in Figure Q3 (b). If the bar is sub ...

(b) A cross section bar made of steel with notches is as shown in Figure Q3 (b). If the bar is subjected to bending moment of M = 20kNm, calculate the maximum stress developed in the steel. Comment whether the structure will rupture if the oy = 1000MPa? (10 marks) 20kN/m r = 32mm 240mm 80mm 20kN/m Figure Q3 (b) 20mm