Current Attempt in Progress Two disks are mounted (like a merry-go-round) on low-friction bearings on thes le and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia 4.51 kg-m² about its central axis, is set spinning counterclockwise (which may be taken as the positive direction) at 396 rev/min. The second disk, with rotational inertia 8.91 kg-m² about its central axis, is set spinning counterclockwise at 750 rev/min. They then couple together. (a) What is their angular speed after coupling? If instead the second disk is set spinning clockwise at 750 rev/min, what are their (b) angular velocity (using the correct sign for direction) and (c) direction of rotation after they couple together? (a) Number (b) Number P Units Units

Current Attempt in Progress Two disks are mounted (like a merry-go-round) on low-friction bearings on thes le and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia 4.51 kg-m² about its central axis, is set spinning counterclockwise (which may be taken as the positive direction) at 396 rev/min. The second disk, with rotational inertia 8.91 kg-m² about its central axis, is set spinning counterclockwise at 750 rev/min. They then couple together. (a) What is their angular speed after coupling? If instead the second disk is set spinning clockwise at 750 rev/min, what are their (b) angular velocity (using the correct sign for direction) and (c) direction of rotation after they couple together? (a) Number (b) Number P Units Units

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 39P

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