Newtons Cradle Balance Balls 7 1/4 inch
Price:
$6.90
- Balance balls
- These swinging balls will keep you occupied for hours at work.
- Newton's Cradle is a clever device that not only demonstrates a pendulum, but also shows the Laws of Conservation of Momentum and Energy.
- Measures: 7 1/4" tall
- Frames are metal and the base is plastic
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