Question 5: [5]
Consider the beam cross-section shown in the
accompanying figure. Determine (a) the 2nd moment
of area about the x-axis and (b) the maximum stress if
the cross-section experiences a bending moment of
25 kNm about the about the x-axis.
Ans: $I = 95.09 \times 10^6 \text{ mm}^4$, $\sigma = 26.29 \text{ MPa}$
100
50
50
x
100
75
75
Dimensions in millimeters