A heavy stick of length L 3.0 m and mass M 25 kg hangs from a low-friction axle,

Question

A heavy stick of length L 3.0 m and mass M 25 kg hangs from a low-friction axle, A bulet of mass m 0.011 kg traveling at v 127 m/s strikes near the bottom of the stick and quickly buries itself in the stick. Close up (a) During the brief impact, is the linear momentum of the stick bullet system constant? Why or why not? It helps to make a sketch of how the stick shifts on the ade during the impact. Not constant, because the ade exerts a force to the left on the stick. Constant, because the surroundings don't exert signaicant forces during the short impact time. Constant, because momentum doesn't change in a collision. Not constant, because the collision is inelastic, (b) During the brief impact, around what point does the angular momentum of the stick bullet system remain constant? Why? The bottom of the stick, because that's where the bullet strikes, O The axle, because the torque about that point is negligible. O The center of mass, because rotational angular momentum doesn't change in a collision (c) Just after the impact, what is the angular speed of the stick (with the bullet embedded in it)? (Note that the center of mass of the stick has a speed oU2. The moment of inertia of a uniform rod about its center of mass is ML2,) radians/s (d) Calculate the change in kinetic energy from just before to just after the impact. Where has this energy gone? Check all that apply: The lost kinetic energy went into angular momentum. Radiation of sound away from the system. Increased intermal (thermal) energy of bullet and stick. (e) The stick (with the bullet embedded in it) swings through a maximum angle 6mao after the impact, then swings back. Calculate o-ar degrees

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