Rotational Inertia

The rotational inertia of an object is a measure of how hard it is to rotate the object. The purpose of this experiment is to find the rotational inertia of a ring and a disk experimentally and to verify that these values correspond to the calculated theoretical values. A known torque is applied to the pulley on the Rotary Motion Sensor, causing a disk and ring to rotate. The resulting angular acceleration is measured using the slope of a graph of angular velocity versus time.

Grade Level: College

Subject: Physics

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Rotational Inertia Experiment

The complete solution for determining the rotational inertia of a ring and a disk.

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Source Collection: Lab #02