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Two disks are rotating about the same axis. Disk A has a moment of inertia of 8.31 kg-m² and an angular velocity of +5.54 rad/s. Disk B is rotating with an angular velocity of -7.80 rad/s. The two disks are then linked together without the aid of any external torques, so that they rotate as a single unit with an angular velocity of -4.61 rad/s. The axis of rotation for this unit is the same as that for the separate disks. What is the moment of inertia of disk B? Number 1 14.3 Units kg-m^2 Conceptual Example 14 provides useful background for this problem. A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. The carousel itself (without riders) has a moment of inertia of 125 kg-m². When one person is standing on the carousel at a distance of 1.50 m from the center, the carousel has an angular velocity of 0.600 rad/s. However, as this person moves inward to a point located 0.910 m from the center, the angular velocity increases to 0.800 rad/s. What is the person's mass? m = i 67.2 kg

Two disks are rotating about the same axis. Disk A has a moment of inertia of 8.31 kg-m² and an angular velocity of +5.54 rad/s. Disk B is rotating with an angular velocity of -7.80 rad/s. The two disks are then linked together without the aid of any external torques, so that they rotate as a single unit with an angular velocity of -4.61 rad/s. The axis of rotation for this unit is the same as that for the separate disks. What is the moment of inertia of disk B? Number 1 14.3 Units kg-m^2 Conceptual Example 14 provides useful background for this problem. A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. The carousel itself (without riders) has a moment of inertia of 125 kg-m². When one person is standing on the carousel at a distance of 1.50 m from the center, the carousel has an angular velocity of 0.600 rad/s. However, as this person moves inward to a point located 0.910 m from the center, the angular velocity increases to 0.800 rad/s. What is the person's mass? m = i 67.2 kg

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter8: Rotational Equilibrium And Dynamics
Section: Chapter Questions
Problem 47P: The uniform thin rod in Figure P8.47 has mass M = 3.50 kg and length L = 1.00 m and is free to...
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Two disks are rotating about the same axis. Disk A has a moment of inertia of 8.31 kg-m² and an angular velocity of +5.54 rad/s. Disk B is rotating with an angular velocity of -7.80 rad/s. The two disks are then linked together without the aid of any external torques, so that they rotate as a single unit with an angular velocity of -4.61 rad/s. The axis of rotation for this unit is the same as that for the separate disks. What is the moment of inertia of disk B? Number 1 14.3 Units kg-m^2
Transcribed Image Text:Two disks are rotating about the same axis. Disk A has a moment of inertia of 8.31 kg-m² and an angular velocity of +5.54 rad/s. Disk B is rotating with an angular velocity of -7.80 rad/s. The two disks are then linked together without the aid of any external torques, so that they rotate as a single unit with an angular velocity of -4.61 rad/s. The axis of rotation for this unit is the same as that for the separate disks. What is the moment of inertia of disk B? Number 1 14.3 Units kg-m^2
Conceptual Example 14 provides useful background for this problem. A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. The carousel itself (without riders) has a moment of inertia of 125 kg-m². When one person is standing on the carousel at a distance of 1.50 m from the center, the carousel has an angular velocity of 0.600 rad/s. However, as this person moves inward to a point located 0.910 m from the center, the angular velocity increases to 0.800 rad/s. What is the person's mass? m = i 67.2 kg
Transcribed Image Text:Conceptual Example 14 provides useful background for this problem. A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. The carousel itself (without riders) has a moment of inertia of 125 kg-m². When one person is standing on the carousel at a distance of 1.50 m from the center, the carousel has an angular velocity of 0.600 rad/s. However, as this person moves inward to a point located 0.910 m from the center, the angular velocity increases to 0.800 rad/s. What is the person's mass? m = i 67.2 kg
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