Gen Physics 1 Lab 7.docx

# Gen Physics 1 Lab 7.docx - Rotational Inertia Phys 1113...

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Rotational Inertia Phys 1113 Lab #7 Jaime McGurk, Javier Gomez, Johan Guzman October 26, 2017 Abstract

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Rotational inertia (I) is the resistance of changes that occurs within a system as a result of its rotational velocity ( ω ¿ about a fixed axis. Torque ( τ ¿ is the effort used to cause rotation within a system to occur and net torque is equal to rotational acceleration (α). In the lab, a system was set up using a pulley, rotating post with added masses, a string, and hanging weight. This system was used to find tension in Newtons, torque of the system, angular acceleration (α) and the rotational inertia of the system when mass was added to the hanging mass. The system was also used to find the above data with a change in the radius of the added masses to the system with no change in the masses on the hanging mass. It was found that the rotational inertia in system one decreased while the angular acceleration and torque increased. In system two, the rotational inertia increased as the angular acceleration decreased. Torque remained constant within system two. The conservation of energy was tested and found to be approximately equal for system two.
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