xUmp.com Logo

Octoberfest Sale 2018
Octoberfest Sale 2018
Newtons Cradle - Large - 7 inches - Image One

Share this product:

Newtons Cradle - Large - 7 inches

by xUmp.com   Item#: 10063   5 star rating 28 customer reviews
Price: $19.99 /each
$17.99 /each (buy 3+)
IN STOCK Ships next business day.
Add to cart to see shipping prices.


Save additional 10% OFF with coupon code: OCTOBERFEST

Newton’s cradle or balance balls is one of the oldest, most interesting physics toys that demonstrate the laws of conservation of energy and momentum (and much more). You just raise one or two balls on one end, let them go and watch what happens on the other side. Great for physics demonstrations or as a desk toy/stress reducer, and makes a great gift.


  • Demonstrates primarily the laws of conservation of energy and momentum
  • Excellent desk toy
  • Perfect for physics demonstrations
  • Cradle size: 7.00in x 7.00in x 4.75in
  • Black wood base
  • Chrome metal balls (22mm diameter)

Note: This product is not meant for young children. It is a delicate object, meant for use as a desk toy or fun stress reducer. Balls on cradle can get entangled or snap off if not used properly.

8 +
Box Size:
8.00 x 8.00 x 6.00 inches
20.32cm x 20.32cm x 15.24cm
1 lb 16 oz
0.90 kg

Small parts. Not for children under 3 yrs.
Toy contains a small ball. Not for children under 3 yrs.

Customer Reviews

5 star rating  great!

big and sturdy!!!!!!!

5 star rating  Newton’s Cradle
Monica from United States, Plainfield , IL
Beyond pleased with this purchase. Did anton of research before purchasing and I must say this exceeded my expectations. Very sturdy and well made. 12 year old daughter requested for birthday gift. Every morning when she gets out of bed, I hear the click clack of the cradle. Great cost, exceptional product.

4 star rating   Newtons Cradle
Emma Lucas from CO - Colorado
Good quality, but doesnt go on for a super long time or anything.

5 star rating  Great Product!
Alana from US, Washington
Bought this for my son as a surprise. Did some research into newtons cradles and I am so glad I bought this one. Great quality, which I was worried about.

5 star rating  Really cool gift!
Aly from Washington
Got this for my 19 year old brother who has always wanted one. He loved it so much when he opened it this morning, and it worked really well! My whole family stood around and watched in awe. Great product!

5 star rating  Great Quality!
Lisa from Maryland
After reading many reviews, I decided to order this Newton's Cradle based on all the positive reviews. However, I was still nervous about how the quality would be. Suffice it to say, this one is excellent! The balls are heavy metal and they touch each other (no gaps), and the strings weren't tangled. My son is going to love it for Christmas. (Be careful when removing the styrofoam packaging material to make sure you don't tangle the strings yourself.)

5 star rating  7 inch Newton's Cradle
Monodb from Longmnt, CO USA
Does what I got it for (to give as a present). Displays the results of simultaneously satisfying the Law of Conservation of Energy and That of the Conservation of Momentum.

5 star rating  Elegant toy for the executive nerd
Walter LeCroy from US, NC, Hendersonville
Clean, well-functioning implementation of the classic conservation of momentum demonstrator. Very nicely done - an elegant toy for the executive nerd.

5 star rating  bchambers
Bobbie Chambers from USA, MICHIGAN, ROMEO
Attracted children of all ages. Piqued curiosity & experimentation.

5 star rating  Newtons Cradle - Large - 7 inches
Rich S from Maryland
Very satisfied. Product quality, and shipment of product met my expectations.

5 star rating  Newtons Cradle - Large - 7 inches
K.O. from Renton, WA
Nice well built item

5 star rating  Excellent Product
Luanne from Hoffman Estates, Illinois
I am perfectly satisfied with this product. I am glad that I had read a warning online about unpacking it carefully. Filaments may get caught on some styrofoam packing material. Be careful and you will have lots of enjoyment from this well-made product

5 star rating  Really fun!
BigBlueToe from Central Coast, CA
I teach 4th grade. I bought this to put on my desk because I thought my kids would love playing with it. They do! It's just what I wanted.

5 star rating  Science on Display ;-)
MCT from Virginia
Great quality - wonderful gift for Granddaughter - illustrating principle of physics and fun too!!!

5 star rating  awesome

way better than those terrible ones on amazon that cost just as much as this one

4 star rating  works well
Bookseller Guy from St. Paul, MN
Looks good on my desk. Balls are level and it works. It's not super solid so the balls lose their momentum relatively soon. Overall for the price it's really good. Kids love it too.

5 star rating  Desk top gift
Michael W. Beattie from USA Milwaukee, Wisconsin
I have always thought that this was a great desk top item.

5 star rating  Excellent Product
Ken R from Des Moines, IA
Found this after a long internet search of smaller, cheaply made products. The weight of the balls is what's needed for this to work correctly. My 9 year old granddaughter loved it!

5 star rating  10 year old niece Loved it!
RMB from Cincinnati, OH
10 year old niece loved it!

5 star rating  Arrived on time...good condition
Jack Paster from Swampscoitt, MA
I purchased this product for my classroom (Introduction to Physics). Great value. Delivery was fast and the pproduct arrived in excellent condition. Thanks.

5 star rating  
victoria from mansfield, tx
Exactly as expected - my daughter loved it! Sturdy.

5 star rating  Newton's Cradle-:large
Sonya from Lake Dallas, TX
Very nice and fun to play with and watch!

5 star rating  newtons cradle
Michele from Louisville, KY
It's sturdy and fun. It's a good size. Our cat ate through the strings so we ordered another one.

5 star rating  VERY GOOD quality!
Cindy from NJ
My teenage son has wanted this for 2 years. Many companies sell these with plastic balls. These are METAL and PERFECT! Thank you so much xUmp!

5 star rating  

Nice weight, good-looking toy.

5 star rating  Newtons Cradle - Large- 7 inches
Marlys from Madison, WI
The Newtons Cradle arrived quickly and in perfect condition. It was a real hit with my grand-nephew who is 10 and in 4th grade.

5 star rating  Ever a delight!
Beverley Sutton from Tucson
Used in a science class to demonstrate Newton's Laws of Motion and the Conservation of Momentum. The students were endlessly fascinated by it and came up with some creative combinations. Product is delicate though, watch youngsters carefully.

5 star rating  Newton's Cradle
Kathy from Moorhead, MN USA
Our grandkids loved it!!


Green Laser Pointer - Black.


Green Laser Pointer - Black

High-quality green laser pointer projects a green dot up to an incredible 2 miles away.

Pet Tornado.


Pet Tornado

Shake the Pet Tornado clockwise and watch the mini tornado funnel form before your eyes!

Head Games.


Head Games

An unconventional ball-tossing, head-catching challenge for 2 players or teams!

Electric Plane Launcher 4M Kit.


Electric Plane Launcher 4M Kit

This kit will get your paper plane ready for takeoff!

Detective Science Fingerprint 4M Kit.


Detective Science Fingerprint 4M Kit

Learn about detective science through this fun fingerprinting kit!

Tarantula Specimen.


Tarantula Specimen

Great tarantula specimen for the science classroom!

xUmp.com Logo

Join our tribe:


Sign-up for our weekly discounts and promotions email newsletter.

xUmp.com Catalog


View xUmp science supplies catalog

xUmp.com Mission