Newton's Cradle is a classic desk toy. Also known as "Balance Balls", "Newton's Pendulum", "Kinetic Balls" and "Newton's Balls", this executive office toy demonstrates the law of conservation of momentum. The clacking of the balls will keep you entertained throughout the day. Pull back one or more of the balls, release them and the same number of balls will swing up on the opposite side. The balls will click back and forth until they stop.
S**E
Good office accent
Arrived with strings completely tangled. Took over 20 minutes to separate the strings alone and then cleaning it up from the foam pieces. That was a tedious work. Considering the price, quality is as expected. It is smaller than expected but otherwise can be a good office decor.
K**P
My Newton's cradle (both of them) arrived in good condition. They serve their intended purpose - as ...
This is a very average product. My Newton's cradle (both of them) arrived in good condition. They serve their intended purpose - as a teaching tool (I am a high school science teacher) - however, since they are inexpensive there is a lot of energy lost in the collisions between the marbles so it loses momentum quite easily. But, for the price, you can't beat it!
Z**A
Disappointed
Too small and lightweight. Not the quality I was expecting. Balls do not keep moving because they are not heavy enough to perpetuate motion.
C**K
Not good for 4 yr old or apparently
This is a lightweight version of the old classic. The balls are too light, the lines to small and it gets twisted up incredibly easy. I had issues with it and my 4 yr old grandson does not have the precision to keep everything completely lined up so once it goes off line and balls twist up you cannot get them separated. Probably my mistake to think it would be like the old style heavy duty ones but would not really recommend for anyone other than an adult with lots of patience. I will attempt to purchase another one for my grandson when he is older and a much better version of the product. As for this one the lines are hopeless and I will just end up throwing it away and eating the $20.00 it cost
A**
Pretty good
Balls don’t go back and forth for very long. But overall nice for the money
T**I
Doesn’t “rock” nearly long enough
Nicely enough made but when we use it as expected, it goes back & forth about 10 seconds, then stops. No fun. We want 1 that will be fun to watch for longer than that !
M**G
Glad it wasn’t expensive
Didn’t really work very well.
D**D
Do not recommend, only goes in motion for 15 seconds.
Doesn’t continually move in motion. Goes for 15 seconds if that. Would not recommend.
A**Y
Tiny!
We bought this for Father’s Day and was disappointed in the size. It’s tiny! It’s also very light and although it’s cute, the balls don't move for very long because it has no weight to keep the momentum going. I would not recommend this for a gift.
D**
Garbage
Base Thickness was great as advertised but it has very little swing strength.It was absolute garbage! I bought a cheaper model that works much better.
Trustpilot
5 days ago
3 days ago
