What is the center of gravity? Lines intersect!

Generally speaking, if it is an object with uniform density, its center of gravity is its geometric center.

Regular symmetrical figures can be determined according to auxiliary lines such as center line and angle bisector, and the specific situation is analyzed.

Asymmetric objects are generally determined by hanging method. (This method should be introduced in the textbook)

If it is an object with uneven density, its center of gravity should be determined by integral calculation of mass.

In the general middle school stage, the center of gravity is aimed at objects with uniform density.

However, during college, the calculation of the center of gravity is mostly based on objects with uneven density.