Name:

CCE $203-$ HW $6\mathrm{.}1-6\mathrm{.}3$

Date:

$2.$ After having such a good time modeling ice cream sandwiches out of plastic and steel, the engineers decided to do it again but this time with more layers of aluminum and plastic. This time the base of the sandwich model is $75$ mm wide, and the height is $212$ mm $.$ The aluminum sections have a height of $3$ mm $,$ while the small plastic sections have a height $d=40mm.$ The modulus of elasticity of the aluminum and plastic are $75$ GPa and $3$ GPa respectively.

Assuming there is a bending moment of $1kN-m$ acting on the beam, what are the maximum compressive stresses in aluminum and the plastic?