---
product_id: 167633601
title: "CERROPI Large Newtons Cradle Pendulum with 7 Balls, Physics Perpetual Motion Desk Toys for Office, Calm Down Fidgets, 50+ Sec Swingtime (Beech Base)"
brand: "cerropi"
price: "HK$777"
currency: HKD
in_stock: true
reviews_count: 8
category: "Cerropi"
url: https://www.desertcart.hk/products/167633601-cerropi-large-newtons-cradle-pendulum-with-7-balls-physics-perpetual
store_origin: HK
region: Hong Kong
---

# 50+ sec swingtime Beech wood base for premium stability 8mm chromed steel & 20mm steel balls CERROPI Large Newtons Cradle Pendulum with 7 Balls, Physics Perpetual Motion Desk Toys for Office, Calm Down Fidgets, 50+ Sec Swingtime (Beech Base)

**Brand:** cerropi
**Price:** HK$777
**Availability:** ✅ In Stock

## Summary

> ⚖️ Balance your desk, your mind, your momentum.

## Quick Answers

- **What is this?** CERROPI Large Newtons Cradle Pendulum with 7 Balls, Physics Perpetual Motion Desk Toys for Office, Calm Down Fidgets, 50+ Sec Swingtime (Beech Base) by cerropi
- **How much does it cost?** HK$777 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/167633601-cerropi-large-newtons-cradle-pendulum-with-7-balls-physics-perpetual)

## Best For

- cerropi enthusiasts

## Why This Product

- Trusted cerropi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek, Natural Elegance:** Premium beech wood base adds a sophisticated, tactile touch to your professional workspace.
- • **Endless Momentum Mastery:** Experience mesmerizing 50+ seconds of smooth, perpetual motion that captivates and calms.
- • **Engineered for Endurance:** Crafted with ultra-durable 8mm chromed steel bars and 20mm steel balls for lasting performance.
- • **Stress-Relief Meets Science:** Perfect desk companion to boost focus, reduce anxiety, and spark curiosity with physics in action.
- • **Gift-Ready with Thoughtful Care:** Individually wrapped, shockproof packaging plus extra ball and cleaning cloth—ideal for gifting moments.

## Overview

The CERROPI Large Newton's Cradle features 7 perfectly aligned 20mm steel balls suspended on 8mm chromed steel bars, mounted on a premium beech wood base. Designed for over 50 seconds of smooth swinging, it demonstrates momentum and energy conservation while serving as a stylish, durable desk toy that relieves stress and inspires creativity. Packaged with care and backed by a 1-year warranty, it’s the ultimate executive toy for professionals and science enthusiasts alike.

## Description

Buy CERROPI Large Newtons Cradle Pendulum with 7 Balls, Physics Perpetual Motion Desk Toys for Office, Calm Down Fidgets, 50+ Sec Swingtime (Beech Base): Cradles - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Made with care. Packaged with care. Delivered with care. - Made with care. Packaged with care. Delivered with care. This is solid quality. It’s heavy and feels durable. Shipping was fast and is worth every penny spent. It was very easy to take out even though it was packaged very carefully with each ball in its own compartment and wrapped. It even came with an extra ball and string. Although it came with instructions, I was too excited to read, its easy enough that you can get it out and going without needing the instructions. I took my time and was careful not to twist or tangle anything. I don’t see this as a toy or something for small kids to play with as the strings are delicate and can get tangled if not treated with care. It looks good on my desk at work and from time to time I get it moving. It doesn’t last very long, but the sound is soothing. Spend the money and get it!
Review: Fun and decorative - Really nice item. Well made.

## Features

- SCIENTIFIC DESIGN：CERROPI newton's cradle adopt scientific design,keep the pendulum balls perfectly lined up,make it possible to swing 50s+. Perfect demonstration of the scientific law of momentum conservation and energy conservation
- SUPERIOR QUALITY：Our newtons cradle made of 8mm chromed metal steel bar, 20mm steel Ball,high-impact nylon, ultra-thin nano technology provide extremely durable oscillatory support, durable for long time use.
- WIDE APPLICATION：This newton balls can be used as office desk gadgets toys to relieve stress; as teaching aid,teaching science intuitively; as toys for family activities, to inspire your child's creativity
- EXQUISITE PACKEGING：We use individual wrapping paper to protect each ball and secure it in foam shockproof material,Perfect for Christmas gifts, Thanksgiving gifts, birthday gifts,Mother's Day gift,Father's Day gift,Valentine's Day gift etc.
- WARRANTY & NOTICE：1 YEAR warranty, If any piece breaks we send replacement balls, strings and plug to you. Messages reply within 12 hours. NOTE: clean the ball thoroughly before using for the longer swing time,one extra ball and a silky soft cleaning cloth are included in the package

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07Y5S5YWR |
| Age Range Description | Adult/Kid |
| Best Sellers Rank | #14,040 in Toys & Games ( See Top 100 in Toys & Games ) #180 in Educational Science Kits |
| Brand Name | CERROPI |
| Color | Silver |
| Customer Reviews | 4.5 out of 5 stars 1,435 Reviews |
| Educational Objective | Logical Thinking |
| Global Trade Identification Number | 00715668926103 |
| Included Components | 1PC Newtons Cradle |
| Item Dimensions | 9.06 x 6.69 x 6.69 inches |
| Item Type Name | science-kits |
| Item Weight | 1200 Grams |
| Manufacturer | CERROPI |
| Manufacturer Maximum Age (MONTHS) | 720.00 |
| Manufacturer Minimum Age (MONTHS) | 60.00 |
| Manufacturer Warranty Description | 60 Day Warranty Against Manufacturer Defects |
| Material Type | Nylon, Steel, Wood |
| Number of Players | 1 |
| Operation Mode | Manual |
| Power Source | Manual |
| Size | Large |
| Supported Battery Types | No batteries required |
| Theme | Physics |
| UPC | 715668926103 |
| Unit Count | 1 Count |

## Images

![CERROPI Large Newtons Cradle Pendulum with 7 Balls, Physics Perpetual Motion Desk Toys for Office, Calm Down Fidgets, 50+ Sec Swingtime (Beech Base) - Image 1](https://m.media-amazon.com/images/I/519EtFoV5NL.jpg)

## Available Options

This product comes in different **Edition** options.

## Questions & Answers

**Q: i thought the entire purpose was to stay in motion until stopped . do they stop on their own?**
A: yes,  they will do stop on their own after 50-60 seconds

**Q: Does this thing get rusted?**
A: No. We have had ours for a few years now and it is still in like new condition. No rust

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

**Q: 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 ?**
A: 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Made with care. Packaged with care. Delivered with care.
*by P***T on July 4, 2025*

Made with care. Packaged with care. Delivered with care. This is solid quality. It’s heavy and feels durable. Shipping was fast and is worth every penny spent. It was very easy to take out even though it was packaged very carefully with each ball in its own compartment and wrapped. It even came with an extra ball and string. Although it came with instructions, I was too excited to read, its easy enough that you can get it out and going without needing the instructions. I took my time and was careful not to twist or tangle anything. I don’t see this as a toy or something for small kids to play with as the strings are delicate and can get tangled if not treated with care. It looks good on my desk at work and from time to time I get it moving. It doesn’t last very long, but the sound is soothing. Spend the money and get it!

### ⭐⭐⭐⭐⭐ Fun and decorative
*by K***M on February 12, 2026*

Really nice item. Well made.

### ⭐⭐⭐⭐⭐ Very good quality !!!
*by T***Y on January 13, 2026*

Got this to teach a group - it is way nicer than expected - love it !

## Frequently Bought Together

- CERROPI Large Newtons Cradle Pendulum with 7 Balls, Physics Perpetual Motion Desk Toys for Office, Calm Down Fidgets, 50+ Sec Swingtime (Beech Base)
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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-04*