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Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia 3.50 kg · m2 about its central axis, is set spinning counterclockwise at 300 rev/min. The second disk, with rotational inertia 5.00 kg · m? about its central axis, is set spinning counterclockwise at 600 rev/min. They then couple together. (a) What is their angular speed after coupling? rev/min (b) If instead the second disk is set spinning clockwise at 600 rev/min, what is their angular speed after they couple together? rev/min (c) What is their direction of rotation after they couple together? O clockwise O counterclockwise

Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia 3.50 kg · m2 about its central axis, is set spinning counterclockwise at 300 rev/min. The second disk, with rotational inertia 5.00 kg · m? about its central axis, is set spinning counterclockwise at 600 rev/min. They then couple together. (a) What is their angular speed after coupling? rev/min (b) If instead the second disk is set spinning clockwise at 600 rev/min, what is their angular speed after they couple together? rev/min (c) What is their direction of rotation after they couple together? O clockwise O counterclockwise

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Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia 3.50 kg · m2 about its central axis, is set spinning counterclockwise at 300 rev/min. The second disk, with rotational inertia 5.00 kg · m2 about its central axis, is set spinning counterclockwise at 600 rev/min. They then couple together. (a) What is their angular speed after coupling? rev/min (b) If instead the second disk is set spinning clockwise at 600 rev/min, what is their angular speed after they couple together? rev/min (c) What is their direction of rotation after they couple together? O clockwise counterclockwise
Transcribed Image Text:Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia 3.50 kg · m2 about its central axis, is set spinning counterclockwise at 300 rev/min. The second disk, with rotational inertia 5.00 kg · m2 about its central axis, is set spinning counterclockwise at 600 rev/min. They then couple together. (a) What is their angular speed after coupling? rev/min (b) If instead the second disk is set spinning clockwise at 600 rev/min, what is their angular speed after they couple together? rev/min (c) What is their direction of rotation after they couple together? O clockwise counterclockwise
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