The movement of these steel balls will keep you entertained throughout the day. By using natural kinetic energy, they will go on and on and on its hypnotizing.
Pull back the polished steel ball on one end and let it fall, the ball on the opposite side will swing up and keep on going. Experiment with releasing multiple balls at once and observe the effect.
The cradle suspends five identical steel balls with high quality nylon string from a sturdy, unique T-style metal frame mounted on a plastic base.
Challenge your children's imaginations. Teach the principles of physics in a fun, hands-on way and clack, clack, clack, clack, clack..away.
Limited Quantity. We sell out often. Consider buying two or more.
Get one for yourself or your friends/family.
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Type: Perpetual Motion Balls, Newton's Cradle
Material: Plastic, Nylon Wire, Steel ball
- Small: 9cm x 9cm x 7.6cm | 3.54in x 3.54in x 2.99in
- Medium: 13.6cm x 13 x 11cm | 5.35in x 5.12in x 4.33in
- Large: 17.8cm x 17.8cm x 14.7cm | 7in x 7in x 5.79in
- Small: 0.1kg | 0.22lb
- Medium: 0.24kg | 0.53lb
- Large: 0.45kg | 0.99lb
Color: Black, Silver
- We do not ship to APO, FPO Address