Discs A and B each have a rotational inertia about the central axis of 0.300 kg m?, a radius of 20.0 cm, and can freely rotate around the center rods passing through these two discs, in the same direction around the rods.

Discs A and B each have a rotational inertia about the central axis of 0.300 kg m, a radius of 20.0 cm, and can freely rotate around the center rods passing through these two discs, in the same direction around the rods. Each was rolled up to turn and pulled for 10.0 s. (The string falls off the end) The magnitude of the force pulling the string is 30.0 N for Disc A and 20.0 N for Disc B. After falling off, the disks collide and have the same final angular velocity at 6.00 s due to the friction between them. (a) What is the average amount of friction torque that caused the final angular velocity to be reached? (b) What is the loss of kinetic energy when torque acts on these plates? (c) Where did "Lost Energy" go?

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genius_generous answered 1 year ago

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Discs A and B each have a rotational inertia about the central axis of 0.300 kg m?, a radius of 20.0 cm, and can freely rotate around the center rods passing through these two discs, in the same direction around the rods.

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