Matali Physics supports Windows Phone 7
We received word that the latest build of Matali Physics now supports Windows Phone 7.
From our informant: Matali Physics is an advanced, cross-platform, fully managed 3D physics engine, intended for the .NET platform. The latest build of the engine introduces support for Windows Phone 7. The available demo also shows the full physical 3D UI on Windows Phone 7.
You can try for yourself on the Matali Physics page.
Jitter Physics
Via Corporal X comes the word (well, sort of: I heard of this thing before, just were too lazy to actually post it here – looking at the news stream tells me that I am not alone on the slacker front, though) about a new, shiny and managed only physics engine named Jitter Physics. Says their PR:
Jitter is a fast and lightweight managed engine written entirely in C#. It includes it's own math framework and does not rely on third party software. The engine was written by the author of JigLibX. Jitter has some additional features including an interface following the .NET coding guidelines.
It is currently in beta and word is that “it is about 100% faster than JibLibX but also much more stable when stacking objects. It supports more default shapes (example: cone, cylinder) and it's code is just nice 
What is missing at the moment is vehicle and terrain support”.
Henge3D Physics Library for XNA
There’s a new Physics engine targeting the XNA FX (hat tip to to Nick Gravelyn for the discovery):
Project Description
Henge3D is a 3D physics library written in C# for XNA. It is implemented entirely in managed code and is compatible with the XBOX 360.
Overview:
- Rigid body simulation with collision detection, response, and approximated friction.
- Supports collision skins consisting of arbitrary convex polyhedra, spheres, capsules and planes. Collision detection against triangle meshes is also supported.
- Supports a number of constraints, including body point constraints, revolute joints, universal joints, prismatic joints, etc.
- Multi-threaded collision detection and collision response.
- Ability to import collision skins from Blender and potentially other modeling programs.
- Supports ragdolls using collections of rigid bodies with constraints (see the Holodeck program for examples).
Article : Verlet Integration Particles
by Gorion
This article will show you what VIP's (Verlet Integration Particles) are and how to make them. If you look it up on wikipedia you can see that the math behind the concept is quite complex. While it's not in the scope of this article to explain the math, I will give you a good website which, in my opinion, explains it really well.