HW-CH119th Edition CH11 Problems: 46, 60, 79, 858th Edition CH11 Problems: 48, 58, 75, 9346.The rotational inertia of a collapsing spinning star drops to13its initialvalue. What is the ratio of the new rotational kinetic energy to the initialrotational kinetic energy?60.In Fig. 11-54, a 1.0 g bullet is °red into a 0.50 kg block attached to theend of a 0.60 m nonuniform rod of mass 0.50kg.The block-rod-bulletsystem then rotates in the plane of the °gure, about a °xed axis at A.The rotational inertia of the rod alone about that A is 0.060 kg°m2. Treatthe block as a particle.(a) What then is the rotational inertia of theblock-rod-bullet system about point A? (b) If the angular speed of thesystem about A just after impact is 4.5 rad/s, what is the bullet±s speed
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