Center of Mass
This GeoGebra applet is about center of mass of a (vertically simple) region bounded by two curves. Instructions are given on the applet itself. One tries to locate center of mass. When center of mass is fairly correctly located, point G representing center of mass pops up with exact coordinates. In this case calculations for center of mass can be viewed by checking the solution box.
For more on center of mass and its use in finding volume check my online book "Flipped Classroom Calculus of Single Variable"
https://versal.com/learn/vh45au/