---
product_id: 17402701
title: "PowerTRC Newtons Cradle Balance Balls 7 1/4\" | Science Physics Gadget | Desk Toys & Accessories"
brand: "powertrc"
price: "€ 49.59"
currency: EUR
in_stock: true
reviews_count: 13
category: "Power Trc"
url: https://www.desertcart.fr/products/17402701-powertrc-newtons-cradle-balance-balls-7-1-4-science-physics
store_origin: FR
region: France
---

# Seamless energy transfer 7.25" precision balance Durable stainless steel PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories

**Brand:** powertrc
**Price:** € 49.59
**Availability:** ✅ In Stock

## Summary

> ⚡ Swing into science — where style meets momentum!

## Quick Answers

- **What is this?** PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories by powertrc
- **How much does it cost?** € 49.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/17402701-powertrc-newtons-cradle-balance-balls-7-1-4-science-physics)

## Best For

- powertrc enthusiasts

## Why This Product

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

## Key Features

- • **Gift of Curiosity:** Ideal for professionals and science lovers alike—combine learning, fun, and style effortlessly.
- • **Gravity in Motion:** Watch physics come alive with every swing, showcasing real-time momentum transfer.
- • **Premium Craftsmanship:** Crafted with mirror-finish stainless steel balls and a sturdy base for lasting durability.
- • **Stress-Busting Visuals:** Meditative and mesmerizing, perfect for quick mental resets during busy workdays.
- • **Executive Desk Statement:** Elevate your workspace with a sleek, science-inspired decor piece that sparks conversation.

## Overview

The PowerTRC Newtons Cradle Balance Balls is a 7.25-inch executive desk toy that visually demonstrates momentum and energy transfer using durable stainless steel balls with a mirror finish. Designed for professionals and science enthusiasts, it doubles as a stylish office decor piece and a stress-relieving gadget, making it a perfect gift for millennial managers seeking both function and flair.

## Description

desertcart.com: PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories : Toys & Games

Review: Good quality and large size - This cradle is nice but was to big for my small desk space. The base is solid but to my suprise the strings were thin and plastic however, If your looking for a large size cradle this is it.
Review: Its funcionality - My son loved it. Its durable and is entertaining when watching

## 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. Share with your friends and family the exciting world of physics and science!
- Quality Materials | PowerTRC's Newton's Cradle is made of durable stainless steel, the metal balls are a reflective mirror finish and the majority of the gadget is made of sturdy plastic.
- Gift | Suitable for adults, serving as a fantastic tool for learning science, beating boredom, and relieving stress. It's a great choice for birthday and holiday gifts. Whether you place it on your desk or shelf, you can give it a little swing anytime you pass by, creating a delightful scene in your home or office!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ZJH3ZP6 |
| Best Sellers Rank | #153,480 in Toys & Games ( See Top 100 in Toys & Games ) #692 in Executive Desk Toys #1,556 in Educational Science Kits |
| Customer Reviews | 4.2 4.2 out of 5 stars (2,263) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 15.5 ounces |
| Item model number | SG_B00ZJH3ZP6_US |
| Manufacturer | PowerTRC |
| Manufacturer recommended age | 16 - 16 years |
| Product Dimensions | 8 x 7.25 x 5 inches |

## Images

![PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories - Image 1](https://m.media-amazon.com/images/I/714bcLCfc-L.jpg)
![PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories - Image 2](https://m.media-amazon.com/images/I/61Oal5vyqkL.jpg)
![PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories - Image 3](https://m.media-amazon.com/images/I/51bP21DMXHL.jpg)

## Available Options

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

## Questions & Answers

**Q: What material is this made of?**
A: The bottom part is made of pretty hard plastic. The balls and the ball holder is made of stainless steel. Works perfectly for me and looks like it will last long.

**Q: Does it go on forever? Or like an hour?**
A: An hour!  You're an optimist.  This thing is horrible.  It goes for about 15 seconds.  I'm returning it.  I remember these things from way back when and they would go for much longer.  I'd gladly spend twice as much for one that was decent, but this is a waste of time.

**Q: what are the stings made of?**
A: They appear to be nylon fishing line

**Q: I am purchasing these for a hotel and need 420 units - what is availability?**
A: As of 7 14 2023, we have over 700 pieces in stock ready to ship via Amazon.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality and large size
*by M***E on July 31, 2025*

This cradle is nice but was to big for my small desk space. The base is solid but to my suprise the strings were thin and plastic however, If your looking for a large size cradle this is it.

### ⭐⭐⭐⭐⭐ Its funcionality
*by A***Y on January 7, 2026*

My son loved it. Its durable and is entertaining when watching

### ⭐⭐⭐⭐ solid and works as it should
*by J***K on November 6, 2025*

works as it should and was a good addition to my science classroom.

## Frequently Bought Together

- PowerTRC Newtons Cradle Balance Balls 7 1/4" | Science Physics Gadget | Desk Toys & Accessories
- ScienceGeek Kinetic Art Asteroid - Electronic Perpetual Motion Desk Toy Home Decoration

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**Shop now:** [https://www.desertcart.fr/products/17402701-powertrc-newtons-cradle-balance-balls-7-1-4-science-physics](https://www.desertcart.fr/products/17402701-powertrc-newtons-cradle-balance-balls-7-1-4-science-physics)

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-20*