Related cold knowledge of newtons cradle balance balls

newtons cradle balance balls is a tabletop installation for demonstrations consisting of ropes passed through 5 balls of the same size, shape and mass. Newtons cradle balance balls are also called momentum conservation pendulum balls, perpetual motion balls, and physical pool balls.

What newtons cradle balance balls do is simple harmonic motion, and in ideal conditions, simple harmonic motion consumes no energy, so it can swing forever. It can stop because the mechanical energy is gradually lost due to the resistance of the air during the swing. So, the bigger the newtons cradle balance balls, the more resistance it has, the faster the mechanical energy is consumed, the easier it is to stop and the shorter the swing time.

newtons cradle balance balls is a tabletop demonstration device invented in the 1960s, in which five balls of equal mass are held in place by suspenders, in close proximity to each other.