We use integrals to derive the #rotationalinertia of a uniform, long, thin rod. And we demonstrate our answer is correct using a Rotational Inertia Demonstrator.
Want Lecture Notes? This is an AP Physics 😄 Mechanics Topic.
0:15 Rotational Inertia
0:42 Linear Mass Density
1:51 About Center of Mass
3:02 About an End
4:27 Rotational Inertia Demonstrator (RID)
6:09 About Center of RID
7:03 Comparing our answers
7:43 Demonstrating our answer
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Graphing the Rotational Inertia of an Irregular Shape
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