Centrifugal force serves as a reaction force to centripetal force, which is the force needed to move an object in a circle at constant speed. According to Newton's first law of motion, a moving body travels along a straight path with constant speed unless it is acted on by an outside force.
There has always been a lot of speculation over why Vincent Van Gogh cut off his ear. While there are different theories floating around for the reason, the most accepted reason believes that he cut off ear during a seizure of epilepsy. Paul Gauguin and Vincent Van Gogh were friends.
But after attempting to work together, van Gogh had a mental breakdown which led to an incident where he threatened Gauguin with a razor blade. Later on that night, while brooding over the attack, van Gogh took the razor blade to his own ear, cutting off part of, but not the entirety of, his left ear.