Problem $2$: Calculate the shear flow along the plane where the boards are connected. The internal shear, $V,$ at the section shown is $732lbs.$ Ignoring the spacing between the nails on the drawing, if each nail can support $25lbs,$ how far apart do the nails need to be spaced? spacing $=$ force nails can resist$/$shear flow but keep in mind the nails are in rows of $3.$