---
product_id: 442191606
title: "QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office"
brand: "qlkunla"
price: "R$800"
currency: BRL
in_stock: true
reviews_count: 6
category: "Qlkunla"
url: https://www.desertcart.com.br/products/442191606-qlkunla-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration
store_origin: BR
region: Brazil
---

# Perpetual kinetic motion Premium solid beech wood Momentum & energy transfer QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office

**Brand:** qlkunla
**Price:** R$800
**Availability:** ✅ In Stock

## Summary

> ⚡️ Swing into brilliance with the ultimate desktop kinetic art!

## Quick Answers

- **What is this?** QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office by qlkunla
- **How much does it cost?** R$800 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/442191606-qlkunla-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration)

## 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 sophisticated present that blends science, art, and relaxation for colleagues, friends, or family.
- • **Physics in Motion:** Experience real-time momentum transfer with precision-engineered stainless steel spheres.
- • **Educational Powerhouse:** Perfect for demonstrating conservation of momentum and energy in classrooms or meetings.
- • **Elegant Desk Statement:** Elevate your workspace with a sleek, minimalist design crafted from solid beech wood and stainless steel.
- • **Stress-Relief Kinetics:** Engage in a calming, meditative flow that helps reduce stress during busy workdays.

## Overview

The QLKUNLA Newtons Cradle is a premium desktop kinetic toy crafted from solid beech wood and stainless steel balls, designed to visually demonstrate the laws of motion and energy conservation. Compact and battery-free, it serves as both an elegant office decor piece and an educational tool, perfect for stress relief and sparking curiosity in physics for professionals and students 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 | B0B253HMYK |
| Assembly Required | No |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #14,702 in Toys ( See Top 100 in Toys ) #259 in Educational Science Kits |
| Color | white |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,860) |
| Date First Available | 3 June 2022 |
| Educational Objective(s) | Physics Concepts (Momentum Conservation, Perpetual Motion, Energy Conservation) |
| Item model number | A-09 |
| Manufacturer recommended age | 3 years and up |
| Material Type(s) | Beech |
| Number of Game Players | 1 |
| Product Dimensions | 14.22 x 11.94 x 14.48 cm; 508 g |
| tech_spec_battery_description_toys | No batteries required |

## Product Details

- **Age range (description):** Kid
- **Brand:** QLKUNLA
- **Item dimensions L x W x H:** 14.2 x 11.9 x 14.5 centimeters
- **Size:** 5.7x5.7x4.7 in
- **Theme:** Physics

## Images

![QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office - Image 1](https://m.media-amazon.com/images/I/61XyO69K0ML.jpg)

## 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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**Shop now:** [https://www.desertcart.com.br/products/442191606-qlkunla-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration](https://www.desertcart.com.br/products/442191606-qlkunla-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-08*