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.
I noticed that Roger (Here's a picture of him http://i.imgur.com/GACY3YS.jpg ) has a tattoo on the inside of his ears. I don't have a picture of the tattoo, but I will take one when I see him next. He was just left in a parking lot and the shelter doesn't know much about him. I think it's a serial number of some kind.