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Gelsonlab HSPD-068 Collision Apparatus  ,Pendulum Balls ,Newton's Cradle Steel Balance Ball Physics Science Pendulum Desk

                                                                      

A great apparatus for demonstrating Newton's Third Law of Motion and the principle of Conservation of Momentum. The new design provides for better results, stability and quality.

 

 Newton’s cradle or balance balls is one of the oldest, most interesting physics toys that demonstrate the laws of conservation of energy and momentum (and much more). You just raise one or two balls on one end, let them go and watch what happens on the other side. Great for physics demonstrations or as a desk toy/stress reducer, and makes a great gift.