There are two discs of masses 3.0 kg and 2.0 kg and radii 10 cm and...

There are two discs of masses 3.0 kg and 2.0 kg and radii 10 cm and 5 cm, respectively. The discs are rotating about their respective center of masses with angular speeds 200 rpm and 300 rpm. The discs are brought together into contact face-to-face with their axes of rotation coincident. a) What is the angular speed of the two-disc system? b) What are the kinetic energies of the discs when they were apart? Denote them as K1 and K2. c) What is the kinetic energy of the two-disc system? Denote it as K. d) Compute difference in kinetic energies |K – (K1+K2)|. How do you account for this difference in kinetic energy?

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genius_generous answered 1 year ago

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