Garret Hebert
PHY 2311
Tues 1:00 garret.hebert@hindscc.edu Abstract: During this lab we will study what rotational Inertia is and how different shapes of masses and different masses behave inertially when compared to each other. We will specifically study the differences of inertia between a disk and a ring. We will use increasing forces to induce angular acceleration of both a disk and a ring of a certain mass. We will then then measure the differences in the acceleration to determine how the ring and the disk resist rotational movement. Afterward we will compare how the radius of the masses and the torque(force) applied relate to the angular acceleration. We will achieve a predictable force by using g=gravity=9.8 for this acceleration.
Theory:
In this experiment we will measure the inertia of a disk and a ring by dividing an applied torque by the resulting acceleration. I=. Then we will calculate the theoretical inertia using the moment of inertia equations for a disk and a ring. Then we will compare the two values and determine a percent error.
Data and Analysis:
Discussion & Conclusion: The law of inertia states that it is the tendency of an object to resist a change in motion. Copernicus and then Galileo were the first to dispute Aristotle's thought on movement and in doing so they developed the first thoughts on inertia. Galileo Galilei was the first state “A body moving on a level surface will continue in the same direction at a constant speed unless disturbed”. Johannes Kepler was the first to look specifically at Inertia, he even gave the name which come from the Latin for “laziness”. But it was Newton who echoed Gallilei with added precision and quantification buy stating that an object will remain in motion or at rest. This resistive force that objects contain is described and “Inertia”, and should be considered the single term that describes Newton’s First Law.
The rotational