As shown in figure, a bullet of mass m = 120 g and speed V = 220 m/s passes completely through a pendulum bob of mass M = 1.80 kg. The bullet emerges with a speed of v. The pendulum bob is suspended by a stiff rod of length e = 40 cm and negligible mass. What is the minimum value of v such that the pendulum bob will barely swing through at a angle 0 = 60° at point B? %3D B. m M 220 m/s V

As shown in figure, a bullet of mass m = 120 g and speed V = 220 m/s passes completely through a pendulum bob of mass M = 1.80 kg. The bullet emerges with a speed of v. The pendulum bob is suspended by a stiff rod of length e = 40 cm and negligible mass. What is the minimum value of v such that the pendulum bob will barely swing through at a angle 0 = 60° at point B? %3D B. m M 220 m/s V