rotate about its axle when pulled with a constant force , as shown in Figure 1. The force is 13. A solid disk rests on a central axle. A string is wound around the disk, which causes the disk to exerted on the string until the string completely unwinds and detaches from the disk at time t=2.0 s. A graph of the net torque as a function of time is shown in Figure 2. How can a student determine what the change in angular momentum of the disk would be between 0.0 s and 2.0 s if friction were negligible? Justify