1. The problem statement, all variables and given/known data Givens: - Each of the 2 cylindrical posts are 0.5 inches thick. - The posts and chain links are made of galvanized steel of identical material composition. - The posts and chain links are solid. - Each post is permanently fixed to unbreakable surfaces. The surfaces will move in exactly opposite directions with infinite (unstoppable) strength. Problem: How thick must each chain link be, when the posts are pulled apart, so that the posts and chain links start to bend/break at the same time? 2. Relevant equations What is/are the equation(s) to solve this problem? 3. The attempt at a solution No idea what the equation(s) are.