Uploaded April 2023 | Updated September 2026, 1 week ago

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In this video, AP Physics teacher James Lincoln demonstrates experiments using the versatile Exploring Rotational Inertia Classroom Kit. This kit is perfect for investigating how mass and distance affect rotational inertia, variable inertia, and torque. It includes the Visible Variable Inertia Set, which lets students observe the relationship between mass and radius in rotational dynamics.

Students can easily adjust the rotational inertia by rearranging the spheres. By pulling apart the two halves of each disk and repositioning the spheres, students get a hands-on, intuitive understanding of the concepts involved.

The visual nature of the set is key, as the steel spheres clearly show how changes in mass distribution impact rotational inertia. This is especially useful for visual learners or those struggling with abstract concepts, as they can see the direct relationship between mass, radius, and rotational dynamics. Perfect for classroom demonstrations and lab activities, the Visible Variable Inertia Set is a valuable tool for enhancing students’ comprehension of rotational inertia and dynamics.


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- Exploring Rotational Inertia Classroom Kit: arborsci.com/products/exploring-rotational-inertia-classroom-kit

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Chapters

0:00 Intro
0:26 Downhill Race
1:13 Adding an Axle
1:46 Angular Momentum
2:47 Outro