---
product_id: 548570775
title: "QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads) (7 Beads)"
brand: "qlkunla"
price: "NT$2836"
currency: TWD
in_stock: true
reviews_count: 8
category: "Qlkunla"
url: https://www.desertcart.tw/products/548570775-qlkunla-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration
store_origin: TW
region: Taiwan
---

# Compact 6.7x4.7x5.8 inch size Perpetual kinetic motion 7 precision-balanced beads QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads) (7 Beads)

**Brand:** qlkunla
**Price:** NT$2836
**Availability:** ✅ In Stock

## Summary

> ⚡ Swing into brilliance with every click!

## Quick Answers

- **What is this?** QLKUNLA 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?** NT$2836 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/548570775-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 education, decor, and entertainment.
- • **Physics in Motion:** Watch momentum and energy transfer flawlessly with every swing.
- • **STEM Learning Made Fun:** Perfect for educators and curious minds to visualize fundamental physics.
- • **Sleek Office Statement:** Elevate your workspace with a classy, science-inspired desk accessory.
- • **Stress-Relief Kinetics:** Engage in meditative motion to boost focus and reduce workday stress.

## Overview

The QLKUNLA Newtons Cradle features 7 beech wood beads precisely balanced to demonstrate the conservation of momentum and energy. Measuring a compact 6.7 x 4.7 x 5.8 inches and weighing 1.17 kg, it serves as both an elegant office decoration and an engaging STEM educational tool, perfect for adults and students alike.

## Description

desertcart.com: QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office(7 Beads) (7 Beads) : Toys & Games

Review: Nice - Always loved these. This one lasted about 3 weeks but not because the product is flawed, because our son was very rough with it and got it twisted up. The product itself is just fine.
Review: Great teaching tool for classroom - This Newton's Cradle was a great teaching tool—my students grasped the concept more easily. Monitor use as the strings can tangle. It arrived promptly and was perfectly packaged.

## 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 |
| Age Range Description | Adult |
| Best Sellers Rank | #6,585 in Toys & Games ( See Top 100 in Toys & Games ) #291 in Educational Science Kits |
| Brand Name | QLKUNLA |
| Customer Reviews | 4.2 out of 5 stars 1,920 Reviews |
| Educational Objective | STEM |
| Included Components | Newton's pendulum X1 |
| Item Dimensions | 6.69 x 4.7 x 5.83 inches |
| Item Weight | 1.17 Kilograms |
| Manufacturer | QLKUNLA |
| Manufacturer Maximum Age (MONTHS) | 960.00 |
| Manufacturer Minimum Age (MONTHS) | 36.00 |
| Manufacturer Part Number | A-12 |
| Material Type | Beech |
| Model Number | A-12 |
| Set Name | 7 |
| Size | 4.7 x 6.69 x 5.83 inches |
| Theme | Physics |
| Unit Count | 1.0 Count |

## Images

![QLKUNLA 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

### ⭐⭐⭐⭐⭐ Nice
*by C***S on March 1, 2026*

Always loved these. This one lasted about 3 weeks but not because the product is flawed, because our son was very rough with it and got it twisted up. The product itself is just fine.

### ⭐⭐⭐⭐⭐ Great teaching tool for classroom
*by S***R on August 31, 2025*

This Newton's Cradle was a great teaching tool—my students grasped the concept more easily. Monitor use as the strings can tangle. It arrived promptly and was perfectly packaged.

### ⭐⭐⭐⭐⭐ Good toy and teaching tool
*by R***. on January 16, 2026*

Great teaching tool for “conservation of energy”. Also, a fun tool. NO BATTERIES NEEDED!!

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-12*