# Lab 3 - PHYSICS LABORATORY REPORT Rotation of a Rigid Body...

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PHYSICS LABORATORY REPORT Rotation of a Rigid Body Tanisha Billups

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October 22, 2008 Objective of the Experiment: The purpose of this experiment is to calculate the momentum of inertia of a rigid body rotating about a fixed axis using Newton’s second law of motion. Theory: In this experiment, Newton’s second law of motion is used to determine the moment of inertia of a given mass on a fixed axis. A rotating beam was used to mount a cylindrical disk after a pulley was mounted to the beam. String was wrapped around the beam and passed over the pulley and attached to a weight hanger. To cause the weight hanger to accelerate to the floor mass was added. To solve for momentum of inertia the mass, radius of the cylinder, and displacement of the weight hanger were measured. The measurements were plugged into the equation I = mr 2 gt 2 _ mr 2 and momentum of inertia was found. 2y Method: 1. Set up the system 2. Attach a string to a beam that is directly mounted to the disk 3.
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