If we start from the exercise seen in classes, the application problem of concept $6\mathrm{.}1$ considers a beam is

made of three planks, $30$ by $120$ mm in cross$-$section, nailed together as shown in Figure $1.$ Knowing

that the spacing between nails is $30$ mm and the vertical shear in the beam is $V=700N$ : $a)$ determine

the shearing force in each nail.

Figure $1.$ Adaptation application problem of concept $6\mathrm{.}1.$