The principle of newtons cradle balance balls
Newtons cradle balance balls is a tabletop demonstration device invented in the 1860s in which five equal-mass spheres are held in place by slings, in close proximity to each other.
Newtons cradle balance balls pendulum structure and how the pendulum works
Newtons cradle balance balls has undergone several renovations over the years. However, the basic outline remains the same and is very simple. An odd number of balls (usually five or seven) that barely touch each other are suspended from a wooden or metal frame. Balls are usually made of stainless steel and, in rare cases, titanium. Due to its good elasticity and low price, stainless steel is ideal for constructing balls.
The physics of newtons cradle balance balls
Newtons cradle balance balls was first proposed in 1676 by the French physicist Edme Mariotte. When swinging the rightmost ball and colliding with four other balls in close proximity on the swing back, the leftmost ball will be ejected, and only the leftmost ball will be ejected. Newton's pendulum can be approximated as a perfectly elastic collision!