Q. 78
The figure shows a column of rectangular cross section $100 \mathrm{~mm} \times 80 \mathrm{~mm}$. It
carries a load of $60 \mathrm{kN}$ at a point $30 \mathrm{~mm}$ from the edge $P Q$. The values of stress
component $\sigma_{z z}$ on surfaces $P Q Q^{\prime} P^{\prime}$ and $S R R^{\prime} S^{\prime}$, at points far away from both
ends of the column, are respectively
(C)
(D)
