After washing clothes, of course, we need to squeeze (wring) before drying. This is intended to reduce the water content inside the cloth so that cloth will dry immediately when dried. There is an interesting phenomenon when wringing clothe after washing. The water comes out after the clothes have been rotated several degrees (several turns). Then, after a number of rotations, the water stops to come out.
It is then clear that there is an equation that explains the amount of water that comes out against the rotation angle. How is the form of the equation? Here we derive a model for such a purpose. We also conducted experiments using various fabric types. The experimental results are in accordance with the model predictions. Those results have been published in European Journal of Physics with the title “Physics model for wringing of wet cloth”