The pendulum consists of a 5-lb slender rod AB and a 10-lb wooden block. A projectile weighing 0.2 lb is fired into the center of the block with a velocity of 1000 ft/s. If the pendulum is initially at rest, and the projectile embeds itself into the block, determine the angular velocity of the pendulum just after the impact. Neglect the angular momentum of the bullet after the impact.

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1000 ft/s C A B -1 ft- 2 ft 1 ft