$6\mathrm{.}1$ A rectangular wooden beam $($Fig$.6\mathrm{.}32)$ with a $10cm15cm$ section is used as a simply supported beam of $3m$ span. It carries a uniformly distributed load of $150kgf(1470N)$ per meter. The load acts in a plane making $30$ with the vertical. Calculate the maximum flexural stress at midspan and also locate the neutral axis for the same section.

Fig. $6\mathrm{.}32$ Problem $6\mathrm{.}1$

$\left[\begin{array}{c}\text{A}\text{n}\text{s}\text{.}{}_A\\ N.\text{A}\text{c}\text{u}\text{t}\text{s}\text{s}\text{i}\text{d}\text{e}AD\text{s}\text{u}\text{c}\text{h}\text{t}\text{h}\text{a}\text{t}DN\end{array}\right]=1\mathrm{.}0cm=1\mathrm{.}0cm=73kg\frac{f}{c}{m}^2=7126$kPa