rubber disc of 80 g mass and 4 cm radius slides along an air table at 1.5m/s, as shown in figure a. It collides indirectly with a second disc of 6 cm radius and 120 g mass (initially at rest) so that its edges barely touch. The discs are held together and rotate after the shock

rubber disc of 80 g mass and 4 cm radius slides along an air table at 1.5m/s, as shown in figure a. It collides indirectly with a second disc of 6 cm radius and 120 g mass (initially at rest) so that its edges barely touch. The discs are held together and rotate after the shock

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Question

A rubber disc of 80 g mass and 4 cm radius slides along an air table at 1.5m/s, as shown in figure a. It collides indirectly with a second disc of 6 cm radius and 120 g mass (initially at rest) so that its edges barely touch. The discs are held together and rotate after the shock, Figure b. The angular moment of the system relative to the center of mass is: