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100% Brand New and High Qualityu0026nbsp;
Weight: 95gu0026nbsp;
Not only demonstrates a pendulum, but also shows the Laws of Conservation of Momentum and Energy.u0026nbsp;
Friction and damping effects are also observed.u0026nbsp;
Often used as a toy to amuse people.u0026nbsp;
Includes steel balls, plastic frames and base.u0026nbsp;
Great gift for everyone.u0026nbsp;
Base size: 8.8*7.5*1.2cmu0026nbsp;
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1 x Newton's Cradle Balance Balls Desk Toy
