Newton's Cradle
£11.75
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- This demonstrates Newton's principle
- Reaction are equal and opposite
- 11 cm
- This causes the beginning of perpetual motion
This demonstrates Newton's principle that 'action and reaction are equal and opposite'. If one of the steel balls is lifted and allowed to fall back at one end, then one will swing out the same distance at the other end. This causes the beginning of perpetual motion which dies down only as a result of friction, an interesting process to watch.
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