$27.99
Get Fast, Free Shipping with Amazon Prime FREE Returns
FREE delivery Sunday, May 5 on orders shipped by Amazon over $35
Or fastest delivery Wednesday, May 1. Order within 17 hrs 31 mins
In Stock
$$27.99 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$27.99
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Ships from
Amazon
Ships from
Amazon
Sold by
Kunla
Sold by
Kunla
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Packaging
Ships in product packaging
black leaf Ships in product packaging

This item has been tested to certify it can ship safely in its original box or bag to avoid unnecessary packaging. Since 2015, we have reduced the weight of outbound packaging per shipment by 41% on average, that’s over 2 million tons of packaging material.

If you still require Amazon packaging for this item, choose "Ship in Amazon packaging" at checkout. Learn more
Packaging
black leaf Ships in product packaging

This item has been tested to certify it can ship safely in its original box or bag to avoid unnecessary packaging. Since 2015, we have reduced the weight of outbound packaging per shipment by 41% on average, that’s over 2 million tons of packaging material.

If you still require Amazon packaging for this item, choose "Ship in Amazon packaging" at checkout. Learn more
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Payment
Secure transaction
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more

Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads) (7 Beads)

4.3 4.3 out of 5 stars 636 ratings
$27.99 with 7 percent savings
Typical price: $29.99

This is determined using the 90-day median price paid by customers for the product on Amazon. We exclude prices paid by customers for the product during a limited time deal.
Learn more
Get Fast, Free Shipping with Amazon Prime
FREE Returns
7 Beads
{"desktop_buybox_group_1":[{"displayPrice":"$27.99","priceAmount":27.99,"currencySymbol":"$","integerValue":"27","decimalSeparator":".","fractionalValue":"99","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"hdWMtYo8NS8ha1zVe6Z%2F70yMm8JKrtZb4wdUD4rKJg4uVZLZPKejfXCMAmK%2B4kR4VPxyLM%2FLv5q9J5I8qeaEVbAPazFlyXdogNh2%2BG4UWf0C1OdWzlri4eUynvBC%2BijWnD6SnquO1VSnxBqDhOfcafDYV6nmrC%2F1F22Tye0d0bWBUoKTxbvckARsIteGfrUX","locale":"en-US","buyingOptionType":"NEW","aapiBuyingOptionIndex":0}]}

Purchase options and add-ons

Brand QLKUNLA
Theme Physics
Age Range (Description) Adult, Kid
Item dimensions L x W x H 6.69 x 4.7 x 5.83 inches

About this item

  • Gravity At Work :See before your eyes as the Newton Balls transfer fall and transfer weight across the gadget. Drop one ball or two balls. You can see the energy transfer in such an astounding way!
  • Office Desk Decor :Show some character and express your love for science and physics with this decorating your office space. Can be meditative and fun to watch also!
  • Educational & Classy :Experience the visual display of momentum. Use this in class and share with your friends and family the exciting world of physics and science!
  • Perpetual Motion: The pendulum balls show the conservation of momentum and energy, creating perpetual motion,these swinging kinetic balls are perfect addition to your office desk decoration accessories or teaching tool at schools.
  • Good Gift Idea: Suit for both kids and adults, excellent for learning science, killing boring time and releasing stress, which makes it a good present for birthday, holiday. Meanwhile, It’s not only a toy, but also a good desk decor. You can put it on your desk or shelf, and swing it anytime when you passing by, it will be a wonderful scenery in your home or office!

Consider a similar item

Amazon's Choice
(84)
$30.10
Climate Pledge Friendly Climate Pledge Friendly

Frequently bought together

QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads
$27.99
Get it as soon as Sunday, May 5
In Stock
Sold by Kunla and ships from Amazon Fulfillment.
+
QLKUNLA Gyroscope Toy Metal Anti Gravity Rotating Desk Gyroscope Flying Motion Balance Physics Toy Educational Training Gift
$14.99
Get it as soon as Sunday, May 5
In Stock
Sold by Kunla and ships from Amazon Fulfillment.
+
ScienceGeek Kinetic Art Asteroid - Electronic Perpetual Motion Desk Toy Home Decoration
$19.99
Get it as soon as Sunday, May 5
In Stock
Sold by ScienceGeek US and ships from Amazon Fulfillment.
Total price:
To see our price, add these items to your cart.
Details
Added to Cart
These items are shipped from and sold by different sellers.
Show details Hide details
Choose items to buy together.

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

Feedback

QLKUNLA

QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads) (7 Beads)

Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?
/
/
/
/
Please sign in to provide feedback.

Product Description

Newtons Cradle

Newtons Cradle: Newton cradle demonstrates the third law of motion with swinging spheres; when one ball is lifted and released it sends force through the rest, pushing the end ball in the opposite direction; these swinging kinetic balls are perfect addition to your office desk decoration accessories or teaching tool at schools

Specifications:

Size: 7.7x4.7x5.8 in

Material: Solid wood+ Fishing line+ Stainless steel balls & structure

Occasions: Science Education supplies, Psychotherapy, Stress release, Leisure and entertainment, Birthday present, Holiday gifts, Business gifts

Warm Prompt:

1, When you use this newton’s cradle, please move it in a horizontal line, so the lines will not be tangled.

2, If it was tangled, you could untangle it still with some patience and time, then you will fix it. It’s also a challenge for you, why not have a try?

How to untangle it: Firstly, please figure out how the wires were tangled, then follow the wires to untangle it, and you can untangle it in few mins.

Newtons Cradle

Perpetual motion

How does this even work? All you need to do is just pull one ball back. When the ball swings back, it will hit the other 3 and the one on the other end will move and do the same thing.

Newtons Cradle

Home & office decor

Perfect for children to learn and understand Newton's laws of motion while playing this interesting gadget. Meanwhile, it is also an excellent desktop toy for the office, a good tool to relax your mind while you feel tired at working. It is a perfect decoration, whether at the office or at home.

Newtons Cradle

Newtons Cradle

Newtons Cradle

Great Gift

Suitable for adults and children, a good toy for learning science, passing boring time, and releasing stress. There is no doubt that this is a good gift for birthdays and holidays. Easy installation, funny and educational.

Longer Swing Time

Due to the resistance and friction of the air, the Newton's cradle balance ball will continue to move for 10-20 seconds. You have enough time to observe the physical performance of the Newton's Cradle Balance Balls movement.

What's Included

Includes 1 Newtons cradle to add to your desk knick knacks and accessories

What's in the box

  • Newton's pendulum X1

    • Looking for specific info?

    Customer reviews

    4.3 out of 5 stars
    4.3 out of 5
    636 global ratings

    Customers say

    Customers like the quality of the product, saying it's a great gift for someone with anxiety. They say it'll stand up to regular use. However, some customers have reported issues with the tangles and damage. They also say the movement is random and slow. Opinions are mixed on value and performance.

    AI-generated from the text of customer reviews

    36 customers mention26 positive10 negative

    Customers like the quality of the toy. They mention that it's a great product, stands up to regular use, and is a fun addition to any desk. Some say that the strings feel fragile.

    "Love this for myself & it makes for a great gift. Very fun to watch in motion." Read more

    "Just purchase it , it's a great quality piece ." Read more

    "...Extremely poorly made." Read more

    "Arrived in perfect condition! Well packaged and no broken pieces! Perfect gift for someone with anxiety to help them relax and breathe!" Read more

    5 customers mention5 positive0 negative

    Customers like the gift. They mention it's a great gift and perfect for someone with anxiety to help them relax and breathe.

    "Love this for myself & it makes for a great gift. Very fun to watch in motion." Read more

    "...Well packaged and no broken pieces! Perfect gift for someone with anxiety to help them relax and breathe!" Read more

    "Great gift!..." Read more

    "Great gift!..." Read more

    3 customers mention3 positive0 negative

    Customers like the focus of the product. For example, they say it helps them focus and feel important in between online game matches.

    "...He loves it and makes him feel important in between online game matches" Read more

    "My 8 y.o., who has ADHD, asked for it for Christmas and it seems to help her focus and or interrupt negative/strong emotions." Read more

    "Good to focus..." Read more

    12 customers mention8 positive4 negative

    Customers have mixed opinions about the performance of the toy. Some say it works great and would be a good addition to a science classroom, while others say that it doesn't work like it's supposed to and the initial experience was disappointing. Overall, the potential for educational value is worth the disappointment.

    "...So far it’s working great and standing up to regular use by a child!" Read more

    "...Overall, while the initial experience was disappointing, the potential for educational value and enjoyment was there." Read more

    "...It came packaged neatly and looks really nice. Works as intended" Read more

    "Works great, easily tangled" Read more

    10 customers mention6 positive4 negative

    Customers are mixed about the value of the toy. Some mention it's not terrible for the price, while others say it'll be a waste of money.

    "...That's all you can ask for.Not terrible for the price" Read more

    "...We were gentle with it, no tugging/pulling. What a piece of junk." Read more

    "It's a great price for something so well made." Read more

    "...Literally a huge waste of money." Read more

    21 customers mention2 positive19 negative

    Customers are dissatisfied with the tangles. They mention that the lines that hold the balance balls are tangled and full of knots. Some customers also say that the product doesn't work properly and gets tampered with easily.

    "...I got it.It was a little tricky unboxing it and it did get tangled some, but it was no big deal." Read more

    "Don't waste your time or money. It came tangled beyond repair and wasn't able to be used even a single time. Extremely poorly made." Read more

    "The steel balls hang from fishing line which tangles easily if you let kids use it." Read more

    "...On morning two, however, it was ridiculously tangled and I got annoyed with my kids (ages 14-9) because I had explained carefully to be easy with it...." Read more

    8 customers mention0 positive8 negative

    Customers are dissatisfied with the damage of the toy. They mention that the box it came in was completely damaged, and that one of the middle ball's wires was broken. Some customers also report that the tow ball had four severed strings.

    "It's unfortunate that my Newton's cradle arrived damaged...." Read more

    "...thing was tangled in an unfixable knot with two of the balls having already been torn off. Do not buy this product." Read more

    "Bought this for my son for Christmas and it broke the same day." Read more

    "...He put it into motion a few times, great. Then the string on one of the balls broke. We were gentle with it, no tugging/pulling. What a piece of junk." Read more

    6 customers mention0 positive6 negative

    Customers are dissatisfied with the movement of the toy. They say that it bends and mess up easily, creating a steadily increasing random ball movement. Some customers also mention that the ball hits twice before it stops moving.

    "...This then creates a steadily increasingly random ball movement which detracts from the beauty of the phenomenon, always means that the balls will..." Read more

    "The one I got kept going and going and the balls ended in a strange pattern rather than the usual five ball swing...." Read more

    "...The strings bend and mess up easily and it doesn’t keep moving for long at all. My 9 year old still likes it so I guess it’s ok" Read more

    "...When you swing a ball, it hits twice before it stops moving. Literally a huge waste of money." Read more

    Relax
    5 Stars
    Relax
    This is a hit in the house. The kids use it for entertainment (they don’t realize it’s relaxing them ) , and I use it for relaxation. It was delivered very quickly and I’m happy I purchased it. The quality is great too!
    Hide
    Thank you for your feedback
    Sorry, there was an error
    Sorry we couldn't load the review

    Top reviews from the United States

    Frank Simpson
    5.0 out of 5 stars Great product
    Reviewed in the United States on April 16, 2024
    Edition: 7 BeadsVerified Purchase
    Grandbabies, love It
    Helpful
     Report
    DW
    5.0 out of 5 stars Always liked this
    Reviewed in the United States on April 4, 2024
    Edition: 5 BeadsVerified Purchase
    I have always liked this, so when I found it,
    I got it.
    It was a little tricky unboxing it and it did get tangled some, but it was no big deal.
    Helpful
     Report
    Ha Nguyen
    4.0 out of 5 stars Almost perfect
    Reviewed in the United States on December 25, 2023
    Edition: 7 BeadsVerified Purchase
    For a Newton's cradle to work well, the balls should be positioned flawlessly. Not true of the one we bought, which means that if you drop one ball down on the left side, the right-most ball moves, but also (a little) so does the one right before it. This then creates a steadily increasingly random ball movement which detracts from the beauty of the phenomenon, always means that the balls will lose energy quite quickly.

    That said, the kids were pretty amazed that they could, say, send 5 balls from the left, hit two, and then 5 balls pop up to the right just leaving two.

    I don't know why the balls are not perfectly positioned but I suspect movement of the balls during shipping, tangling of the cord and maybe resulting a tiny movement of one ball along its nylon strand. Manufacturer should consider some kind of styrofoam package or something to hold the balls in position during shipping. Indeed, the instructions mention that the balls might arrived tangled.

    All in all though, the product did its job.
    3 people found this helpful
    Helpful
     Report
    Zohaib Maqbool
    5.0 out of 5 stars Newtons Cradle
    Reviewed in the United States on February 20, 2024
    Edition: 5 BeadsVerified Purchase
    Love this for myself & it makes for a great gift. Very fun to watch in motion.
    Helpful
     Report
    John K
    5.0 out of 5 stars Gift
    Reviewed in the United States on March 24, 2024
    Edition: 5 BeadsVerified Purchase
    Bought as a gift. Classic
    Helpful
     Report
    Nick Alexandrow
    1.0 out of 5 stars Don't Waste Your Money
    Reviewed in the United States on March 16, 2024
    Edition: 7 BeadsVerified Purchase
    Don't waste your time or money. It came tangled beyond repair and wasn't able to be used even a single time. Extremely poorly made.
    Helpful
     Report
    Angela C
    5.0 out of 5 stars Very durable and does the job
    Reviewed in the United States on February 8, 2024
    Edition: 5 BeadsVerified Purchase
    Just purchase it , it's a great quality piece .
    Helpful
     Report
    Juri Love
    5.0 out of 5 stars Great
    Reviewed in the United States on March 16, 2024
    Edition: 7 BeadsVerified Purchase
    My son absolutely loves this
    Helpful
     Report

    Top reviews from other countries

    Translate all reviews to English
    B Henderson
    5.0 out of 5 stars Good price and quality.
    Reviewed in the United Kingdom on April 24, 2024
    Edition: 5 BeadsVerified Purchase
    For child's birthday.
    Report
    Alfonso
    4.0 out of 5 stars Molto buono
    Reviewed in Italy on April 22, 2024
    Edition: 5 BeadsVerified Purchase
    The media could not be loaded.
     C'è lo da una decina di giorni e fino adesso nulla di negativo da dire rapporto qualità prezzo abbastanza bene si potrebbe fare meglio
    Customer image
    Alfonso
    4.0 out of 5 stars Molto buono
    Reviewed in Italy on April 22, 2024
    C'è lo da una decina di giorni e fino adesso nulla di negativo da dire rapporto qualità prezzo abbastanza bene si potrebbe fare meglio
    Images in this review
    Customer image
    Customer image
    Report
    LAUTIER
    5.0 out of 5 stars Bien
    Reviewed in France on February 21, 2024
    Edition: 5 BeadsVerified Purchase
    Produit comme décrit sur le commentaire
    Report
    hb11
    5.0 out of 5 stars Super
    Reviewed in France on December 26, 2023
    Edition: 5 BeadsVerified Purchase
    Belle confection
    Report
    Moony;)
    5.0 out of 5 stars Cool gift
    Reviewed in the United Kingdom on December 20, 2023
    Edition: 5 BeadsVerified Purchase
    My son really wanted one of these. Ideal gift and will love it
    Report