8.21. As shown in Figure P8.21, a bullet of mass m and speed v passes completely through a pendulum bob of mass M. The b

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8 21 As Shown In Figure P8 21 A Bullet Of Mass M And Speed V Passes Completely Through A Pendulum Bob Of Mass M The B 1 (20.46 KiB) Viewed 19 times

8.21. As shown in Figure P8.21, a bullet of mass m and speed v passes completely through a pendulum bob of mass M. The bullet emerges with a speed of v/2. The pendulum bob is suspended by a stiff rod (not a string) of length and negligible mass. What is the minimum value of v such that the pendulum bob will barely swing through a complete vertical circle? m M