Problems 19: [8 points] Two disks, each of mass, M are initially at rest p. connected by a string between their centers. The disks slide on low-friction ice as the center of the String string is pulled by a string with a constant force F through a distance, d. The disks collide and stick together, having moved a distance b horizontally. What is the increase in internal energy of the system? [Hint: You will need to consider the change in translational kinetic energy of the system to solve the problem.] m Fd m Fb Q Fwm m Fm+m E) None of the above