3. The figure on the right shows a system of two masses connected by a string. As m falls a distance h, M accelerates up the plane. The coefficient of m friction between M and the inclined plane is M. Starting from F = ma, show in detail that the change S of kinetic energy is given by AK = =(m + M)[v} - v7]. Do not assume that system starts at rest. (15 pts) What is the change in potential energy on the system after the m has fallen a distance h? What is the work done by friction on the system