Question: how long (approx.) does it take for a 'Newton's Cradle' to stop?


  1. It depends on how well it is made! If it is very low friction, I imagine a good one could keep going for up to a minute?

    In my field of research, an experiment actually made a “quantum Newton’s cradle” They started a one-dimensional gas of atoms bouncing back and forth like a Newton’s cradle – and for as long as they could see it, it didn’t stop! (It did slow down, but for technical reasons, rather than fundamental ones).