12.11. Model: The disk is a rigid body rotating about an axis through its center. Visualize:Solve:The speed of the point on the rim is given by rim.vRω=The angular velocity of the disk can be determined from its rotational kinetic energy which is 2120.15 J.KI==The moment of inertia I of the disk about its center and perpendicular to the plane of the disk is given by
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