Last Updated on July 28, 2026 by Maged kamel
Video for Polar moment of inertia for a rectangle section.
How do we get the expression for the Polar moment of inertia for a rectangle? A video also illustrates another way to find the product of inertia Ixy at the Cg for a rectangle.
The Timestamps for the video are shown.
[presto_timestamp time=”0:00″]0:00[/presto_timestamp] –Use an area (dx*dy) to get the Ixy for the rectangle as a third proof.
[presto_timestamp time=”2:19″]2:19[/presto_timestamp] –How to find the polar moment of inertia for a rectangle?
[presto_timestamp time=”3:02″]3:02[/presto_timestamp] –How to find the polar moment of inertia for a rectangle at the Cg?
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The related post is Post 5-Easy approach for Product of inertia Ixy for a rectangle.
There is a newly added video, 7-Video, for practice problem-1 for the moment of inertia.