$8\mathrm{.}22.$ Compare the torsional constants $J$ for each of the sections of the accompanying figure. If the maximum shear stress is $14$ksi, compute the torsional moment capacity of each section. Can this be done for the W$30\backslash$times $99?$ Explain.

$($a$)$

$($b$)$

Problem $8\mathrm{.}22$