Question 1: for three identical balls, if the center of gravity of a is at the center of the ball, the center of gravity of B is above the center of the ball, and the center of gravity of C is below the center of the ball, then the supporting force of fulcrum P on the three balls is? Na

Question 1: for three identical balls, if the center of gravity of a is at the center of the ball, the center of gravity of B is above the center of the ball, and the center of gravity of C is below the center of the ball, then the supporting force of fulcrum P on the three balls is? Na

Using the method of limit thinking, suppose that the mass of B is concentrated in the space of an atom at the top of the ball
Similarly, hypothesis C