1. The problem statement, all variables and given/known data 2 equal masses are joined together by a spring of stiffness k. each of the masses is then connected to a wall with an identical spring. derive the equations of motion in matrix form. (a diagam has 2 masses with x1 on top of the first mass and x2 on top of the second.) 2. Relevant equations hooke's law: F = kx 3. The attempt at a solution mass 1: mx1'' = F(x2 - x1) - Fx1 mx2'' = Fx2 - F(x2 - x1) ^ are these correct?