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A 4.0 g bullet is fired into a 0.40 kg block attached to the end of a 0.60 m nonuniform rod of mass 0.50 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 that axis at A is 0.060 kg?m2. Treat the block as a particle.

(a) What then is the rotational inertia of the block-rod-bullet system about point A? _______kgxm2

(b) If the angular speed of the system about A just after impact is 4.5 rad/s, what is the bullet's speed just before impact? _______m/s

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