1. The problem statement, all variables and given/known data Given an isosceles triangle - Length = L - Uniform Density = ρ - Width Varies from 0 at x = 0 to a at x = L I attached a picture of it. 2. Relevant equations Have to show the width at position x is given by (a/L)x 3. The attempt at a solution Now it is only two marks, but I don't have a clue where to even begin. Could anybody help?