a 8.19 g bullet is fired into a 0.135 kg block attached to the end of a 0.673 m nonuniform rod of mass 0.840 kg. The block-rod-bullet system then rotates in the plane of the figure, about a fixed axis at A. The rotational inertia of the rod alone about A is 0.0622 kg·m2. Treat the block as a particle. (a) What then is the rotational inertia of the block-rod-bullet system about point A? (b) If the angular speed of the system about A just after impact is 4.66 rad/s, what is the bullet's speed just before impact?

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a 8.19 g bullet is fired into a 0.135 kg block attached to the end of a 0.673 m nonuniform rod of mass 0.840 kg. The block-rod-bullet system then rotates in the plane of the figure, about a fixed axis at A. The rotational inertia of the rod alone about A is 0.0622 kg·m2. Treat the block as a particle. (a) What then is the rotational inertia of the block-rod-bullet system about point A? (b) If the angular speed of the system about A just after impact is 4.66 rad/s, what is the bullet's speed just before impact?

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