Here’s a simple cloth simulation. The grid mesh is set as the cloth and the cube is the collision object. Play the simulation by placing your mouse cursor in the 3D View and pressing Alt+A.
Like the other physics simulations in Blender, if you have an older computer, the first time this simulation runs it might be pretty slow. However, Blender will cache the results for you and the second time it plays, it should be nearly real time.
If you get a chance, play with adding fields like wind to this scene and perhaps animate the cube. It’ll look sweet, I promise.
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