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Newest 1Pc Newtons Cradle Steel Balance Ball Early Fun Development Educational Desk Toy for Children Hot!
100% Brand New and High Quality
Not only demonstrates a pendulum, but also shows the Laws
of Conservation of Momentum and Energy.
Friction and damping effects are also observed.
Often used as a toy to amuse people.
Includes steel balls, plastic frames and base.
Great gift for everyone.
1 x Balance Balls Desk Physics Science Pendulum Desk Toy