Newton pendulum in detail Dimensions H x W x D: approx. 13.5 x 13.5 x 11.5 cm Weight: approx. 250 g Material: plastic, metal Color: black, silver scope of delivery 1 x shot put pendulum FUNNY TOYIt is a very funny decompression toy that a ball can be used to hit other balls and swing.Excellent educational science gadget. Not only demonstrates a pendulum, but also shows the laws of conservation of momentum and energy. EXCELLENT EDUCATIONAL GadgetExcellent educational & science gadget, own your very own piece of scientific history and explore significant values of physics.Not only demonstrates a pendulum, but also shows the Laws about conservation of Momentum and Energy. HIGH QUALITY MATERIALMade of steel material, bright, preservative and not easy to rusty.Our newton cradle use high quality which is strong enough to not be broken easily. PERFECT AS GIFTPerfect for decorating in the office, home and other indoor places.Can be a funny gift to your friends, family and children.