tion. $E=29,000$ksi. Proportional limit $=36,000$ psi. Assume simple ends and maximum permissible $\frac{L}{r}=200.$

$5-1.$ A solid round bar of $1\frac{1}{4}$ in diameter:

a$.L=4ft0$ in $($Ans$.14\mathrm{.}89$kips $)$

b$.L=2ft3$ in $($Ans$.$ Euler equation not applicable, $F_c$ exceeds proportional limit$)$

c$.L=6ft6$ in $($Ans$.$ Euler equation not applicable, $\frac{L}{r}$ exceeds $200)$