Required information

Five metal strips, each a $0\mathrm{.}51\mathrm{.}5-$in$.$ cross section, are bonded together to form the composite beam shown. The modulus

of elasticity is $30{10}^6$ for the steel, $15{10}^6$ for the brass, and $10{10}^6$ for the aluminum. The beam is bent

about a horizontal axis by a couple of moment $13\mathrm{.}5$

kip.in$.$

Determine the maximum tensile stress in each of the three metals.

The maximum tensile stress in aluminum is

ksi.

The maximum tensile stress in brass is

$$ ksi.

The maximum tensile stress in steel is

ksi.