Problem $8-4$: Compute the shearing stress at the horizontal neutral axis for a beam having a rectangular cross$-$sectional shape with a width of $3\mathrm{.}5-$in$.$ and a height

of $11\mathrm{.}25-$ in$.$ for shearing force, $V=20,000lbs.$ Use the general shear formula.

$=\frac{VQ}{It}=$

psi