PROBLEM $4\mathrm{.}33$

A bar having the cross section shown has been formed by securely bonding brass and aluminum stock. Using the data given below, determine the largest permissible bending moment when the composite bar is bent about a horizontal axis.

$\backslash$begin$\{$tabular$\}\{|$l$|$c$|$c$|\}$

$\backslash$hline & Aluminum & Brass $\backslash \backslash$

$\backslash$hline Modulus of elasticity & $70$ GPa & $105$ GPa $\backslash \backslash$

$\backslash$hline Allowable stress & $100$ MPa & $160$ MPa $\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$