Fiberglas members are made by embedding glass fibbers in a resin. A fibreglass ladder rail has an area of 0.56 square inches. Glass fibbers make up 24% of the shape with volume. A 660 pound load is applied to the ladder rail. The modulus of elasticity of the resin is 0.5x10 6 psi, while the modulus of elasticity of the glass fibbers is 8.1x10 6 psi.
1. What is the area of the resin?
2. What is the stress in the fibbers?
3. What is the stress in the resin?