--- product_id: 455490723 title: "QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office" brand: "qlkunla" price: "€ 36.96" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.sk/products/455490723-qlkunla-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration store_origin: SK region: Slovakia --- # Premium beech wood build Perpetual kinetic motion 5.7x5.7x4.7 in compact size QLKUNLA Newtons Cradle Balance Balls Science Physics Gadget Desktop Decoration Kinetic Motion Toy for Home and Office **Brand:** qlkunla **Price:** € 36.96 **Availability:** ✅ In Stock ## Summary > ⚡ Swing into brilliance with every click—where science meets style! ## 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?** € 36.96 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/455490723-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:** Ideal for curious minds of all ages—blend learning, decor, and fun effortlessly. - • **STEM Meets Style:** Perfect for professionals and educators to demonstrate momentum and conservation of energy. - • **Gravity in Action:** Watch energy transfer flawlessly with every swing—science you can see! - • **Desk Statement Piece:** Elevate your workspace with a sleek, meditative physics gadget that sparks conversation. - • **Stress-Busting Kinetics:** A satisfying, rhythmic motion that helps you focus and unwind during busy workdays. ## Overview The QLKUNLA Newtons Cradle is a compact, battery-free kinetic desktop toy crafted from premium beech wood. Measuring 5.7x5.7x4.7 inches and weighing just over half a kilogram, it demonstrates the principles of momentum and energy conservation through perpetual motion. Perfect for office decor, educational use, and stress relief, it ranks #97 in Executive Desk Toys and boasts a strong 4.2-star rating from over 2,000 users. ## Description Newtons Cradle: Newton cradle demonstrates the third law of motion with swinging spheres; when one ball is lifted and released it sends force through the rest, pushing the end ball in the opposite direction; these swinging kinetic balls are perfect addition 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 this newton’s cradle, please move it in a horizontal line, so the lines will not be tangled. 2, 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 to untangle it, and you can untangle it in few mins. ## 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 | |---------------|-------| | Age Range Description | Adult | | Asin | B0B253HMYK | | Battery Description | No batteries required | | Best Sellers Rank | #9,415 in Toys & Games (See Top 100 in Toys & Games) #93 in Executive Desk Toys | | Brand Name | QLKUNLA | | Customer Reviews | 4.2 4.2 out of 5 stars (2,091) 4.2 out of 5 stars | | Educational Objective | STEM | | Included Components | Newton's pendulum X1 | | Is Assembly Required | No | | Item Dimensions | 5.6 x 4.7 x 5.7 inches | | Item Weight | 0.51 Kilograms | | Manufacturer | QLKUNLA | | Manufacturer Maximum Age Months | 960.00 | | Manufacturer Minimum Age Months | 36.00 | | Manufacturer Part Number | A-09 | | Material Type | Beech | | Model Number | A-09 | | 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) ## Available Options This product comes in different **Edition** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great science learning *by on Reviewed in the United States July 23, 2025* Very nice but beware of tangling nylon cords if used with too young of child.I recommend this for 8 yr old and up. ### ⭐⭐⭐⭐⭐ Nice *by on Reviewed in the United States 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. ### ⭐⭐⭐⭐⭐ It keeps my husband and cat entertained! *by on Reviewed in the United States May 31, 2026* Got this a gift for my husband for Christmas, he absolutely loves it, and so does our cat Daisy! ## 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/455490723-qlkunla-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration](https://www.desertcart.sk/products/455490723-qlkunla-newtons-cradle-balance-balls-science-physics-gadget-desktop-decoration) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-06-24*