Roskio Newton's Cradle Balance Ball - Swinging Physics Science Pendulum Balls Desk for Office Physics Teacher Decorations U-style Mini Small
- Newton cradle balance ball is not only shows the pendulum, but also shows the conservation of momentum and the law of conservation of energy..
- A perfect decoration for desks and tables, whether at the office, classroom or at home.
- Adorable model to demonstrate newton’s law and perpetual motion. bounces back and forth about 10 -15 seconds before you have to restart it..
- Size: 15.8cm x 10.5cm x 14.5cm(L x W x H).