Find the equations of motion for the system, where m1 and m2 are the masses of the two objects, k1, k2 and k3 are the spring constants of the three springs. In addition, you are given that l1, l2 and...

Find the equations of motion for the system, where m1 and m2 are the masses of the two objects, k1, k2 and k3 are the spring constants of the three springs. In addition, you are given that l1, l2 and l3 are the equilibrium displacements at which spring 1, spring 2, and spring 3 apply zero force, respectively. Lastly, d is the distance between the two rigid walls.