This classic 'executive toy' also demonstrates various physical principles. These include conservation of momentum, conservation of kinetic energy and Newton's observation that 'action and reaction are equal and opposite'.
When one of the steel balls is lifted and allowed to fall back at one end, 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, gravity and other external forces
Always an interesting process to watch
Ball diameter approx. 14mm
Weight of each ball approx. 12.5g
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