How do I find the center of gravity of humans?
“In a regular geometric solid with the uniform density, the center of gravity is the object’s geometric center. Finding the center of gravity of irregular objects can be tricky. There must be an upward force exerted at the board’s two points of contact with the chairs, the pencils, otherwise the body and board would be falling freely toward the center of the earth. The readings on the scales give the magnitude of those upward forces at these points. The system is motionless. Therefore, it is in equilibrium. Certain principles of physics regarding the state of equilibrium will allow you to calculate the distance from the right pencil to the person’s center of gravity. The first condition of equilibrium is that upward and downward forces balance. The downward forces are the weights of the board and the person respectively. There must also be an upward force exerted at the board’s two points of contact with the chairs and the pencils. Otherwise, the body and board would be falling freely
