Maged kamel - "Engineering Oasis"

3-How to find the area and Cg for a semi-circle?

March 7, 2026April 18, 2022 by Maged kamel

What is the first moment of area for a semi-circle?

How do you determine the area and Cg for a semi-circle? Use the integration of small area dA to get the value of the area and the Cg distance.

2- How to find the area and Cg for a circular shaft?

March 7, 2026April 14, 2022 by Maged kamel

Brief illustration for Post 2-First moment of area for a circular shaft.

How to determine the area and Cg for a circular shaft? Use the integration of small area dA to get the value of the area and the Cg distance.

22- Easy illustration of Iy for the Trapezium.

February 23, 2026April 13, 2022 by Maged kamel

The moment of inertia Iy for Trapezium and polar moment of inertia.

Moment of inertia Iy for the Trapezium, How to get the Iy value for the trapezium? and how to get the polar of inertia?

7- Easy introduction to row echelon form.

January 12, 2026April 9, 2022 by Maged kamel

Post 7-matrix-Row reduced echelon form and reduced row echelon form.

Introduction to row echelon form and reduced row echelon form and their components. what is gauss- Jordan’s elimination?

1- How to find the area and Cg for a circle?

March 7, 2026April 3, 2022 by Maged kamel

Brief illustration for Post 1-First moment of area for a circle

How to determine the area and Cg for a circle? Use the integration of small area dA to get the value of the area and the Cg distance.

14- A solved problem-inertia value for a given direction.

January 4, 2026April 3, 2022 by Maged kamel

A Solved problem for the value of Ix and Iy and Iy for a given direction.

A solved problem-inertia value for a given direction. how to get Ix’, Iy’and Ix’y’ about new axes that have 30 degrees rotation clockwise. two methods are used/

13- A solved problem for Mohr’s circle of inertia case 4.

January 4, 2026March 30, 2022 by Maged kamel

A solved problem- for case 4 inertia, where Ix < Iy and Ixy is negative.

A solved problem for Mohr’s circle of inertia case 4. This post will introduce a solved problem for Mohr’s circle of inertia case 4. The moment of inertia about the X-axis, Ix, is less than the moment of inertia about the Y-axis, Iy, and the product of inertia, Ixy, is … Read more

12- Easy Approach to Mohr’s circle of inertia-fourth case.

January 4, 2026March 28, 2022 by Maged kamel

The post includes Mohr’s circle of inertia-fourth case. How to find the principal two axes’ orientation and the maximum and minimum values of inertia?