1. Moving Along a Track Two masses are connected by a string and a pulley on a track as shown in the diagram below. Let's assume that we have a system with an ideal frictionless track, ideal massless string and an ideal massless pulley. m1 track m2 1. Draw a free body diagram for mass m alone. What is/are the forces acting on m? Are they doing any work? Is the work positive or negative? Which force(s) is/are conservative? Which is/are non-conservative? Is the total energy (kinetic + potential) of m conserved? (20 pts) 2. Draw free body diagram for mass m2 alone. What is/are the forces acting on m? Are they doing any work? Is the work positive or negative? Which force(s) is/are conservation? Which are non- conservative? Is the total energy (kinetic + potential) of m conserved? (10 pts) 3. Consider m and m2 as a system. Which force(s) is/are internal? Which are external? (4 pts) Consider the external forces only. Which force(s) is/are doing work? (4 pts) Are there are any non-conservative external forces that do work on the system? Is the total mechanical energy of the system conserved? (4 pts) 2