--- product_id: 678889855 title: "Circle of Forceless Motion The Upward Acceleration Caused by The Combined Force of Gravity and Supporting Force On an Object Concave-Convex Bridge Demonstrator" brand: "elysiua" price: "FREE" currency: VND in_stock: false url: https://www.desertcart.vn/products/678889855-circle-of-forceless-motion-the-upward-acceleration-caused-by-combined store_origin: VN region: Vietnam --- # Adjustable Rail Gap Gravity & Support Forces Concave-Convex Tracks Circle of Forceless Motion The Upward Acceleration Caused by The Combined Force of Gravity and Supporting Force On an Object Concave-Convex Bridge Demonstrator **Brand:** elysiua **Price:** FREE **Availability:** āŒ Out of Stock ## Summary > šŸš€ Elevate Your Physics Game! ## Quick Answers - **What is this?** Circle of Forceless Motion The Upward Acceleration Caused by The Combined Force of Gravity and Supporting Force On an Object Concave-Convex Bridge Demonstrator by elysiua - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/678889855-circle-of-forceless-motion-the-upward-acceleration-caused-by-combined) ## Best For - elysiua enthusiasts ## Why This Product - Trusted elysiua brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - ā€¢ **šŸ” Visualize Forces:** Experience the dynamic interplay of gravity and support forces in real-time. - ā€¢ **šŸ—ļø Durable Design:** Constructed with high-quality materials for long-lasting educational use. - ā€¢ **āš” Accelerate Learning:** Enhance understanding of physics concepts with engaging hands-on demonstrations. - ā€¢ **šŸ”„ Dual Functionality:** Explore both concave and convex bridge mechanics with a single instrument. - ā€¢ **šŸ“ Precision Engineering:** Includes an adjustable rail gap for tailored experiments and accurate results. ## Overview The Circle of Forceless Motion is an innovative educational tool designed to demonstrate the principles of gravity and supporting forces through engaging experiments with concave and convex tracks. Featuring adjustable components and durable construction, this instrument is perfect for enhancing physics education in classrooms or labs. ## Description Take a steel ball and place it at the bottom of the concave bridge. Adjust the distance between the iron wires at the hip of the two bridges so that the iron ball just does not fall when it is stationary. Apply a little pressure with your fingers, and the ball will open the bridge arms and fall. Then, let the ball roll down the inclined arm. You can see that when the ball reaches the center of the bottom of the concave bridge, it falls from between the wires of the bridge arm. This shows that the pressure of the moving ball on the bottom of the concave bridge is greater than the pressure at rest. This is not difficult to explain, because when the ball passes through the center of the concave bridge, the combined force of gravity and supporting force on the ball produces upward acceleration. It can be seen from N-mg=mv"/R that if vā‰ 0, then N) mg. Configuration: concave-convex bridge demonstrator x1 Applicable to: science and technology exhibitions, teaching, experimental groups, home furnishings Size:58*24*10.5cm - Easy to carry, suitable for photography, teaching, learning, demonstration, etc. It is a perfect tool for chemistry education. - Simple structure, easy to operate, easy to disassemble, simple and convenient to use. - Adjustable design to easily meet your needs, you can adjust the height according to your needs. - The product has good stability and can effectively prevent the funnel from falling. -Made of high quality iron material, sturdy and durable. The coating has excellent appearance quality and adhesion. ## Features - This instrument has a stand. Composed of concave and convex tracks, steel balls, etc. - This instrument consists of two parallel concave and convex rails, a bracket, a steel ball and a rail gap adjuster. - Mainly used to demonstrate the forces exerted by moving objects on the concave and convex bridges respectively. - The combined force of gravity and supporting force on an object produces upward acceleration. - The greater the speed, the greater the pressure on the supporting which can be seen more clearly in the concave bridge experiment. ## Images ![Circle of Forceless Motion The Upward Acceleration Caused by The Combined Force of Gravity and Supporting Force On an Object Concave-Convex Bridge Demonstrator - Image 1](https://m.media-amazon.com/images/I/51bJ-w3fCYL.jpg) ![Circle of Forceless Motion The Upward Acceleration Caused by The Combined Force of Gravity and Supporting Force On an Object Concave-Convex Bridge Demonstrator - Image 2](https://m.media-amazon.com/images/I/51b+f+E6l0L.jpg) ![Circle of Forceless Motion The Upward Acceleration Caused by The Combined Force of Gravity and Supporting Force On an Object Concave-Convex Bridge Demonstrator - Image 3](https://m.media-amazon.com/images/I/51fISsX+gZL.jpg) ![Circle of Forceless Motion The Upward Acceleration Caused by The Combined Force of Gravity and Supporting Force On an Object Concave-Convex Bridge Demonstrator - Image 4](https://m.media-amazon.com/images/I/51zF3a52-OL.jpg) ![Circle of Forceless Motion The Upward Acceleration Caused by The Combined Force of Gravity and Supporting Force On an Object Concave-Convex Bridge Demonstrator - Image 5](https://m.media-amazon.com/images/I/517a4A2wIwL.jpg) --- ## Why Shop on Desertcart? - šŸ›’ **Trusted by 1.3+ Million Shoppers** ā€” Serving international shoppers since 2016 - šŸŒ **Shop Globally** ā€” Access 737+ million products across 21 categories - šŸ’° **No Hidden Fees** ā€” All customs, duties, and taxes included in the price - šŸ”„ **15-Day Free Returns** ā€” Hassle-free returns (30 days for PRO members) - šŸ”’ **Secure Payments** ā€” Trusted payment options with buyer protection - ā­ **TrustPilot Rated 4.5/5** ā€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/678889855-circle-of-forceless-motion-the-upward-acceleration-caused-by-combined](https://www.desertcart.vn/products/678889855-circle-of-forceless-motion-the-upward-acceleration-caused-by-combined) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-22*