Capstan Phenomenon: Understanding Force Amplification

This lecture presents a project on the capstan phenomenon in continuum mechanics at EPFL, focusing on the force amplification when wrapping a rope around a rod. The instructor demonstrates how increasing force at one end of the rope leads to a significant increase in tension at the other end, allowing for the lifting of heavy masses with minimal effort. The project aims to explore using this phenomenon to hold a cup of tea without adding extra tension, determining the necessary number of rotations.