# How to make a Newton Cradle

I want to make a Newton Cradle. Just wondering how I can reduce the loss of energy so the balls keep bumping for a long time

Nidum
Gold Member
(1) Use balls made from very hard materials . Hardened steel or Chromium plated steel are commonly used .

(2) Have precisely aligned , identical and accurately repeating suspensions for the balls .

(3) If you want it to run for really extended periods you could devise an electromechanical energiser to give the balls a kick now and then .

Michael2525
(1) Use balls made from very hard materials . Hardened steel or Chromium plated steel are commonly used .

(2) Have precisely aligned , identical and accurately repeating suspensions for the balls .

(3) If you want it to run for really extended periods you could devise an electromechanical energiser to give the balls a kick now and then .
Is there anyway I can make a mechanical energizer rather than an electrical energizer? And how long do you think it will run if I don't have an energizer.

Also, does the amount of balls have an effect on the cradle?

Nidum