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 3.17 kg·m2 about its central axis, is set spinning counterclockwise (which may be taken as the positive direction) at 489 rev/min. The second disk, with rotational inertia 7.08 kg·m2 about its central axis, is set spinning counterclockwise at 858 rev/min. They then couple together. (a) What is their angular speed after coupling? If instead the second disk is set spinning clockwise at 858 rev/min, what are their (b) angular velocity (using the correct sign for direction) and (c) direction of rotation after they couple together?

Given, Rotational inertia of plate 1, I1=3.14 kg m2, Rotational inertia of plate 2, I2=7.08 kg m2,…

Answered: Two disks are mounted (like a…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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 3.17 kg·m² about its central axis, is set spinning counterclockwise (which may be taken as the positive direction) at 489 rev/min. The second disk, with rotational inertia 7.08 kg·m² about its central axis, is set spinning counterclockwise at 858 rev/min. They then couple together. (a) What is their angular speed after coupling? If instead the second disk is set spinning clockwise at 858 rev/min, what are their (b) angular velocity (using the correct sign for direction) and (c) direction of rotation after they couple together?

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