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Construct your own Newton's Cradle in just 10 minutes! Perfect for gadget lovers, DIY fiends and busy executives looking for a hands-on challenge.
An LB Classic! Designed by Mr Loncraine and Mr Broxton over 25 years ago! The first and still the best.
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.
If you raise and release one ball, one ball is ejected the other side; if 2, then 2 balls are ejected. If you raise the single ball higher so it hits at a higher velocity, still only one ball is ejected. How does the system 'know' how many balls to eject?
Measures 11.5 x 9.5 x 14 cm.
Newton's cradle is a well known system made of about 5 pendula, each attached with 2 strings, that demonstrates the conservation of energy and conservation of momentum. One can show, using the corresponding equations, that the ejected balls must have the same velocity and mass as the incoming balls. An interesting experiment is to place a credit card between or before the suspended balls.
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