20-Video for Iy at the CG for a Triangle.

Last Updated on October 22, 2026 by Maged kamel

Video for Iy at the CG for a triangle.

How do we estimate the Moment of Inertia in the y-direction for a triangle at the CG by superimposing the Iy values of two right-angle triangles?

Timestamps for the video:

  • 0:00- How do we get the value of Iy at the CG for a triangle?
  • 4:05-Derive an expression for x bar for a triangle.
  • 6:45- The final value of Iy at the CG for a triangle.
  • 7:25- The final value of the square of the radius of gyration Ky^2 at the CG for a triangle.

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Please refer to the next Video for Ixy at the CG for a triangle.

The previous video is video 19- video for Iy for a triangle.

The related post is post 14a. How do you get the moment of inertia Iy-at Cg for a triangle?

There is a valuable resource: a calculator to estimate the Moment of Inertia for variable shapes.