i thought the entire purpose was to stay in motion until stopped . do they stop on their own?

yes, they will do stop on their own after 50-60 seconds

Does this thing get rusted?

No. We have had ours for a few years now and it is still in like new condition. No rust

What is the length? The title states 11" while the product descriptions specifies 9".

The length of the marble base is 9.06 inches, the width is 6.69 inches, and the diagonal length of the marble base is about 11 inches.

we had one before from a mall and the balls were tangled so we couldn't use it does this one have the balls where they don't tangle ?

The one I ordered through Amazon was packaged very carefully with each ball and string wrapped in plastic. The strings were not tangled. The unit has not tangled; the balls are heavy weight and seem to be good quality. I am sorry that you had that experience. I enjoy the cradle so much; it is intriguing.

Cerropi Large Newtons Cradle Pendulum With 7 Balls Physics Perpetual

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VT27103

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Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate your desk game with timeless physics in motion!

PREMIUM DURABILITY - Crafted with 8mm chromed steel bars and 20mm steel balls for a sleek, long-lasting executive desk centerpiece.
GIFT READY ELEGANCE - Individually wrapped with foam protection and presented in exquisite packaging—ideal for impressing colleagues or loved ones.
WORRY FREE WARRANTY - Backed by a 1-year warranty with replacement parts and responsive support to keep your momentum uninterrupted.
ENDLESS MOMENTUM MASTERY - Experience over 50 seconds of mesmerizing perpetual motion that perfectly demonstrates physics in action.
STRESS RELIEF MEETS SCIENCE - A sophisticated fidget toy that doubles as a calming office companion and an intuitive teaching aid.

The CERROPI Large Newton's Cradle features 7 perfectly aligned 20mm steel balls suspended on 8mm chromed steel bars with a stylish beech wood base. Designed for over 50 seconds of swing time, it serves as a premium executive desk toy that combines stress relief, educational value, and durable craftsmanship. Ideal for professionals seeking a blend of science, style, and calm focus, it comes gift-ready with a 1-year warranty and replacement parts included.

Specifications

ASIN	B07Y5S5YWR
Age Range Description	Adult/Kid
Best Sellers Rank	#17,425 in Toys & Games ( See Top 100 in Toys & Games ) #169 in Educational Science Kits
Brand Name	CERROPI
Color	Silver
Customer Reviews	4.5 out of 5 stars 772 Reviews
Educational Objective	Logical Thinking
Global Trade Identification Number	00715668926103
Included Components	1PC Newtons Cradle
Indoor Outdoor Usage	Indoor
Item Dimensions	9.06 x 6.69 x 6.69 inches
Item Type Name	science-kits
Item Weight	1200 g
Manufacturer	CERROPI
Manufacturer Part Number	2057
Manufacturer Warranty Description	60 Day Warranty Against Manufacturer Defects
Manufacturer recommended age	5 years and up
Material Type	Nylon, Steel, Wood
Model Number	2057
Number of Packs	1
Number of Players	1
Operation Mode	Manual
Power Source	Manual
Set Name	Newton's Cradle with 7 Balls
Size	Large
Supported Battery Types	No batteries required
Theme	Physics
UPC	715668926103
Unit Count	1 Count

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VT27103

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vanuatu.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

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CERROPI Large Newtons Cradle Pendulum with 7 Balls, Physics Perpetual Motion Desk Toys for Office, Calm Down Fidgets, 50+ Sec Swingtime (Beech Base)

Description

Specifications

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