3-Video for Ix for a rectangle section.

Last Updated on July 30, 2026 by Maged kamel

Video for Ix for a rectangle section.

How do we get the expression for Ix for a rectangle section? by using a horizontal strip of length b and integrate with respect to a vertical axis Y passing by the rectangular left side.

Another alternative method to get the Ix for the rectangular section about CG.

width dy we can integerate with respect to a horizontal axis passing by the rectangular base.

The Timestamps for the video are shown.

0:00 – Estimate the moment of inertia for the x-axis passing by CG.
1:05 – Estimate the product moment of inertia and Polar moment of inertia in a rectangular section.
1:30 – Ix for the rectangular section by a horizontal strip (b*dx) about an external axis X.
5:16 – Ix for the rectangular section of(b*h) about an external axis X and also about the CG
6:29 – Another alternative method to get the I Ix for the rectangular section about CG.

The PDF for the content of the video can be downloaded.

The related post is Post 3- Easy Introduction to Ix for the rectangular section.

A newly added video, 4-Video for Iy for a rectangle section.