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.
The official version about van Gogh's legendary act of self-harm usually goes that the disturbed Dutch painter severed his left ear lobe with a razor blade in a fit of lunacy after he had a row with Gauguin one evening shortly before Christmas 1888.