A rectangular bar having width $w=4\mathrm{.}75$ in$.$ and

thickness $t=2\mathrm{.}00in.$ is subjected to a tension load

$P,$ as shown in the figure. The magnitudes of the

normal and shear stresses on plane $AB$ must not

exceed $15$ ksi and $7$ ksi $,$ respectively. Determine

the maximum load $P$ that can be applied without

exceeding either stress limit$.$ Assume $a=1$ and $b=$

Answer: $P=$

ki