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2. A thin, uniform rod of length l = 24.0)cm and mass m = 1.20 kg has a ball of diameterd = 8.0cm and mass M = 2.00kg attached to one end. The arrangement is originallyvertical and stationary with the ball at the top as shown in Fig.2. Suppose thecombination rotates freely about the bottom end of the rod through an angle of 0 =90° after being given a slight push. (a) What is the rotational kinetic energy of the combination after the rotation?(b) What is the angular speed of the rod and ball after the rotation? (c) Find the linear speed of the center of mass of the ball at the same moment.

2. A thin, uniform rod of length l = 24.0)cm and mass m = 1.20 kg has a ball of diameterd = 8.0cm and mass M = 2.00kg attached to one end. The arrangement is originallyvertical and stationary with the ball at the top as shown in Fig.2. Suppose thecombination rotates freely about the bottom end of the rod through an angle of 0 =90° after being given a slight push.
(a) What is the rotational kinetic energy of the combination after the rotation?(b) What is the angular speed of the rod and ball after the rotation?
(c) Find the linear speed of the center of mass of the ball at the same moment.

Grade:12th pass

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