---
product_id: 550776434
title: "Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads) (7 Beads)"
brand: "qlkunla"
price: "€ 88.48"
currency: EUR
in_stock: true
reviews_count: 6
category: "Qlkunla"
url: https://www.desertcart.nl/products/550776434-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration-kinetic
store_origin: NL
region: Netherlands
---

# Perpetual kinetic motion demo Solid beech wood frame 7 precision stainless steel balls Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads) (7 Beads)

**Brand:** qlkunla
**Price:** € 88.48
**Availability:** ✅ In Stock

## Summary

> ⚡ Master momentum, mesmerize your mind!

## Quick Answers

- **What is this?** Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads) (7 Beads) by qlkunla
- **How much does it cost?** € 88.48 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/550776434-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration-kinetic)

## Best For

- qlkunla enthusiasts

## Why This Product

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

## Key Features

- • **Gift of Genius:** A thoughtful present blending education, fun, and style
- • **Physics in Motion:** Experience Newton’s third law live on your desk
- • **STEM Learning Tool:** Perfect for sparking curiosity in science at any age
- • **Sleek Office Statement:** Elevate your workspace with a classy, scientific decor piece
- • **Stress-Relief Kinetics:** Watch mesmerizing momentum to unwind and refocus

## Overview

The QLKUNLA Newtons Cradle features 7 stainless steel balls suspended on a solid beech wood frame, demonstrating the conservation of momentum and energy through perpetual kinetic motion. Ideal for office decor, stress relief, and STEM education, this desktop gadget combines elegance with scientific intrigue, making it a perfect gift for professionals and learners alike.

## Description

Newtons Cradle: Newtoncradle demonstrates the third law of motion with swinging spheres; when oneball is lifted and released it sends force through the rest, pushing the endball in the opposite direction; these swinging kinetic balls are perfectaddition to your office desk decoration accessories or teaching tool at schools Specifications: Size: 5.7x5.7x4.7 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 thisnewton’s cradle, please move it in a horizontal line, so the lines will not betangled. 2.The ball in order from the outside to the inside, one by one from the inside of the foam to remove one by one, take special care not to tangle the line together! 3.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 tountangle it, and you can untangle it in few mins.

Review: Ok - Works. Shame no auto supply
Review: Works perfectly

## Features

- 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!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C7KRG6NP |
| Assembly Required | No |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #28,688 in Toys ( See Top 100 in Toys ) #68 in Explorer Toys |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,855) |
| Date First Available | 9 July 2023 |
| Educational Objective(s) | STEM |
| Item model number | A-12 |
| Manufacturer recommended age | 3 years and up |
| Material Type(s) | Beech |
| Product Dimensions | 16.99 x 11.94 x 14.81 cm; 1.17 kg |

## Product Details

- **Age range (description):** Kid
- **Brand:** QLKUNLA
- **Item dimensions L x W x H:** 17 x 11.9 x 14.8 centimeters
- **Size:** 4.7 x 6.69 x 5.83 inches
- **Theme:** Physics

## Images

![Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads) (7 Beads) - Image 1](https://m.media-amazon.com/images/I/61tPipkRoHL.jpg)

## Available Options

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

## Questions & Answers

**Q: Will this keep going all day with out stopping? I need it to keep going all day to trick my thermostat that there is someone home ?**
A: This isn't a perpetual motion device.  It will stop after about a minute. Friction has its way.

**Q: is the base wood some say it is not**
A: It's not wood, it's plastic.

## Customer Reviews

### ⭐⭐⭐⭐ Ok
*by A***. on 3 August 2025*

Works. Shame no auto supply

### ⭐⭐⭐⭐⭐ Review
*by M***. on 24 January 2026*

Works perfectly

### ⭐⭐⭐⭐⭐ Review
*by K***T on 15 September 2025*

Fine as a pre-teen toy

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-26*