In Fig. 10-84, a 1.0 g bullet is fired into a 0.60 kg block attached to the end of a 0.75 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 `0.060kg*m^(2)`. 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 4.5 rad/s, what is the bullet's speed just before impact?

Explanation

(a) `0.40kg*m^(2)`, (b) `2.4xx10^(3)m//s`