1. The problem statement, all variables and given/known data Design a rectangle or square member that is 9" long to meet the yield point. The material is Acrylonitrile Butadiene Styrene (ABS) Plastic. The yield is 8lbs. 2. Relevant equations Bending Stress=(My)/I M=Moment y=Neutral Axis I=Moment of Inertia Mmax=(PL)/4 P=Load L=Length Deflection=(PL^3)/(48EI) E=Modulus of Elasicity 3. The attempt at a solution Tried to find the moment to find moment of inertia, but reached a dead end from there.