Free AP Physics C lesson
Rotational Inertia
This AP Physics C: Mechanics lesson is designed for AP Physics C self-study. It includes 7 video lessons, 7 practice questions, and an estimated completion time of 35 minutes.
Video lessons
Rotational Inertia or Moment of Inertia
Watch on YouTubeRotational Inertia for a Long Slender Rod
Watch on YouTubeRotational Inertia for a Solid Disk
Watch on YouTubeRotational Inertia for a Solid Cylinder
Watch on YouTubeRotational Inertia for a Slender Rod of NON-UNIFORM mass density
Watch on YouTubeRotational Inertia for a Solid Cylinder of NON-UNIFORM mass density
Watch on YouTubeThe Parallel-Axis Theorem
Watch on YouTube
Practice covered
- What is the formula for rotational inertia of a system of point masses?
- What is the rotational inertia of a uniform slender rod of mass m and length L about an axis through its center?
- What is the rotational inertia of a uniform solid disk of mass m and radius R about an axis through its center?
- How does the rotational inertia of a solid cylinder about its central axis compare to that of a solid disk of the same mass and radius?
- When calculating rotational inertia for an object with non-uniform mass density, what additional information is required compared to uniform density?
- For a disk with surface mass density sigma = Cr^2 (where C is a constant), how does the rotational inertia compare to a uniform disk of the same total mass and radius?
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