--- product_id: 474184292 title: "Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office" brand: "qlkunla" price: "€ 45.13" currency: EUR in_stock: true category: "Qlkunla" url: https://www.desertcart.sk/products/474184292-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration-kinetic store_origin: SK region: Slovakia --- # Kinetic perpetual motion demonstration Solid beech wood frame for premium durability 5 stainless steel balls for perfect momentum Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office **Brand:** qlkunla **Price:** € 45.13 **Availability:** ✅ In Stock ## Summary > ⚡ Swing into brilliance with every motion! ## Quick Answers - **What is this?** Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office by qlkunla - **How much does it cost?** € 45.13 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/474184292-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:** Ideal present for professionals and lifelong learners alike - • **Physics in Motion:** Experience Newton’s third law live on your desk - • **Educational & Engaging:** Perfect tool to spark curiosity in science and physics - • **Sleek Office Statement:** Elevate your workspace with a classy science icon - • **Stress-Busting Kinetics:** Meditative swinging to clear your mind between tasks ## Overview The QLKUNLA Newton's Cradle features 5 precision stainless steel balls suspended on durable fishing lines within a solid beech wood frame. Measuring 5.7x5.7x4.7 inches and weighing just over half a kilogram, it visually demonstrates the conservation of momentum and energy through perpetual kinetic motion. Designed as both an elegant office decor piece and an educational tool, it’s perfect for professionals seeking a stylish stress-relief gadget or a captivating conversation starter that embodies the spirit of physics. ## Description Product 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. Directions Move Newton's cradle in a horizontal line to prevent lines from tangling. To remove the balls, take them out one by one from the inside of the foam to the outside and be careful not to tangle them. If the lines get tangled, they can be patiently unravelled. To detangle, find out how the threads tangle and follow them to untangle them. It may take a few minutes, but it can be done. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Safety Warning no See more ## 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 | | Age Range Description | Adult | | Battery Description | No batteries required | | Best Sellers Rank | 23,712 in Toys & Games ( See Top 100 in Toys & Games ) 257 in Educational Science Kits | | Brand Name | QLKUNLA | | Country Of Origin | China | | Customer Reviews | 4.0 4.0 out of 5 stars (1,376) | | Educational Objective | Illustrate physical principles (energy and impulse conservation) | | Included Components | Newton's pendulum X1 | | Is Assembly Required | No | | Item Dimensions | 14.2 x 11.9 x 14.5 centimetres | | Item Weight | 0.51 Kilograms | | Manufacturer | QLKUNLA | | Manufacturer Part Number | A-09 | | Material Type | Beech | | Maximum Age Recommendation | 960.0 | | Minimum Age Recommendation | 36.0 | | Model Number | A-09 | | Number of Items | 1 | | Set Name | Newton's Cradle (5 Balls) | | Size | 5.7x5.7x4.7 in | | Theme | Physics | ## Product Details - **Age range (description):** Adult - **Brand:** QLKUNLA - **Item dimensions L x W x H:** 14.2 x 11.9 x 14.5 centimetres - **Size:** 5.7x5.7x4.7 in - **Theme:** Physics ## Images ![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) ## Available Options This product comes in different **Edition** options. ## Frequently Bought Together - QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office - Homedics Tabletop Water Fountain, Home Décor Soothing Sound Machine - Automatic Pump, Deep Basin & Natural River Rocks. Indoor Zen Relaxation for Office, Living Room, or Bedroom, 8.25” Tall - Artificial Bonsai Tree Juniper Faux Plants Indoor Small Fake Plants Decor with Ceramic Pots for Home Table Office Desk Bathroom Shelf Bedroom Living Room Farmhouse Decorations --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/474184292-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration-kinetic](https://www.desertcart.sk/products/474184292-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration-kinetic) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-09-01*