# How to create a physics simulation of wrecking ball (rope and weight at the end) **URL:** \ **Category:** Samples & Examples\ **Tags:** physx, create, physics\ **Created:** [September 12, 2022, 4:57am UTC](https://forums.developer.nvidia.com/t/how-to-create-a-physics-simulation-of-wrecking-ball-rope-and-weight-at-the-end/227624 "2022-09-12T04:57:05Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![ronbubl](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@ronbubl](https://forums.developer.nvidia.com/u/ronbubl)\ **Post date:** [September 12, 2022, 4:57am UTC](https://forums.developer.nvidia.com/t/how-to-create-a-physics-simulation-of-wrecking-ball-rope-and-weight-at-the-end/227624/1 "2022-09-12T04:57:05Z")
Hi, I am able to create a deformable simulation on a cylinder to mimic a rope but I can’t understand why a fixed joint to a sphere with a rigid body simulation doesn’t work or why I am not able to connect the rope to beam so it doesn’t fall. If there is any tutorial I missed regarding this issues or even better a solution that works please inform me. thank you. ---
**Author:** ![WendyGram](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/wendygram/32/157225_2.png) [@WendyGram](https://forums.developer.nvidia.com/u/WendyGram)\ **Post date:** [September 13, 2022, 3:47pm UTC](https://forums.developer.nvidia.com/t/how-to-create-a-physics-simulation-of-wrecking-ball-rope-and-weight-at-the-end/227624/2 "2022-09-13T15:47:59Z")
Hello @ronbubl! Have you checked out this video yet? [![](https://global.discourse-cdn.com/nvidia/original/3X/f/c/fc139eb0c15d6a5a99c6ec2caed2d52dee602f80.jpeg "Deformable Body Overview in Omniverse USD Composer") ](https://www.youtube.com/watch?v=RfD8-X0Zyoc) Also, here is a link to more information about Deformable Bodies: [Deformable-Body Simulation — Omniverse Extensions documentation](https://docs.omniverse.nvidia.com/prod_extensions/prod_extensions/ext_physics/deformable-bodies.html#deformable-body-simulation) ---
**Author:** ![ronbubl](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@ronbubl](https://forums.developer.nvidia.com/u/ronbubl)\ **Post date:** [September 15, 2022, 12:25pm UTC](https://forums.developer.nvidia.com/t/how-to-create-a-physics-simulation-of-wrecking-ball-rope-and-weight-at-the-end/227624/3 "2022-09-15T12:25:00Z")
Thank you Wandy. I followed the tutorial - I missed the attachment part. but now I have a new problem. My rope (cylinder) is stretching like a rubber - I created a physical material for deformable body and I change the young’s modulus, and still nothing. Any Idea? ---
**Author:** ![WendyGram](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/wendygram/32/157225_2.png) [@WendyGram](https://forums.developer.nvidia.com/u/WendyGram)\ **Post date:** [September 15, 2022, 3:26pm UTC](https://forums.developer.nvidia.com/t/how-to-create-a-physics-simulation-of-wrecking-ball-rope-and-weight-at-the-end/227624/4 "2022-09-15T15:26:45Z")
Hello @ronbubl! The dev team suggest that you take a look at our rigid body rope examples Window \> Simulation \> Demo Scenes \> Rigid-body ropes. ---
**Author:** ![ronbubl](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@ronbubl](https://forums.developer.nvidia.com/u/ronbubl)\ **Post date:** [September 18, 2022, 12:20pm UTC](https://forums.developer.nvidia.com/t/how-to-create-a-physics-simulation-of-wrecking-ball-rope-and-weight-at-the-end/227624/5 "2022-09-18T12:20:59Z")
I took a look at the demo and then tried to add a weight to an anchored rope. as long as the weight was low, every thing was fine, as soon as I added weight - the rope started to act like a rubber - the elements started to get apart, I tried various stiffness options - none worked. what am I missing? thank you so much for your active help and answers. ---
**Author:** ![AdamMoravanszky](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/adammoravanszky/32/14043_2.png) [@AdamMoravanszky](https://forums.developer.nvidia.com/u/AdamMoravanszky)\ **Post date:** [September 19, 2022, 12:53pm UTC](https://forums.developer.nvidia.com/t/how-to-create-a-physics-simulation-of-wrecking-ball-rope-and-weight-at-the-end/227624/6 "2022-09-19T12:53:13Z")
The higher the mass ratio is between the total mass of the whole system and the individual chain link pieces, the higher you need to make your simulation frequency in the scene, and/.or you might want to try using articulations. ---
**Author:** ![webshow1](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@webshow1](https://forums.developer.nvidia.com/u/webshow1)\ **Post date:** [March 10, 2023, 4:37pm UTC](https://forums.developer.nvidia.com/t/how-to-create-a-physics-simulation-of-wrecking-ball-rope-and-weight-at-the-end/227624/7 "2023-03-10T16:37:13Z")
Hi Adam, Your Intro to Physics Part 1: Setting Up a Wheel in NVIDIA Omniverse Create, is a useful guide on how to apply physics from scratch but. since it’s based on the 2020 version, it doesn’t quite represent the 2022.3.3 interface. Do you have an update that would track with that? Better still, is there a basic step-by-step overview of how to assign physics to a small number of imported bodies? The Property menu is so vast and context sensitive that it’s difficult to follow the cursor movements, so a simpler, clearer view would be helpful. ---
**Author:** ![AlesBorovicka](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/alesborovicka/32/21824_2.png) [@AlesBorovicka](https://forums.developer.nvidia.com/u/AlesBorovicka)\ **Post date:** [March 11, 2023, 9:35am UTC](https://forums.developer.nvidia.com/t/how-to-create-a-physics-simulation-of-wrecking-ball-rope-and-weight-at-the-end/227624/8 "2023-03-11T09:35:18Z")
Hi, yes, there is an updated tutorial series for physics extension from Adam: > **[Playlist | SERIES - Omniverse Physics Extension - Kit 104 | NVIDIA On-Demand](https://www.nvidia.com/en-us/on-demand/playlist/playList-7a9df4c6-0a14-4e24-959b-c6f4045458ac/)** > > Playlist Regards, Ales