Wonder World Pendulum, Collision Ball With Base & Nylon Strings Decorative Showpiece - 13.5 cm  (Steel, Metal, Plastic, Black, Silver)

Kindly handle with care while unpacking.This is a simple construction made up of high quality plastic for base and arch to which highly durable nylon strings which bare the spheres are attached.Fun play: When sphere is lifted and released at one end, the sphere at the other end lifts upward due to the force that has been transmitted through the stationery spheres. The last sphere which was lifted upwards now drops and force is transmitted through the remaining stationery spheres and repeating in the opposite direction.Usage: Great fun, educational physics demonstrator, the Newton's cradle is a great invention for both kids and adults, intellectual and elegant decoration for your room and office, this Newton Cradle Balance Balls is definitely what you really want. NOTE:When you use this newton's cradle, please move it in a horizontal line, so the lines will not be tangled.Please don't worry, if it was tangled, you could untangle it still, just need some patience. DIY your own cradle!