A centripetal force (from Latin centrum center and petere to seek) is a force that makes a body follow a curved path. Its direction is always orthogonal to the motion of the body and towards the fixed point of the instantaneous center of curvature of the path.
There are a number of things that can cause a whitish coating or white spots to develop on the tongue, including the f ollowing: 1  Leukoplakia. 2  Oral thrush. 3  Oral lichen planus.
There is number of tiny finger like structures called papillae on the tongue and when it gets inflamed the tongue surface takes up a white coating. This is due to the accumulation of bacteria or fungi on the papillae. Other causes for white surface on the tongue are dry mouth, dehydration, fever, and smoking. Intake of certain medications can alter the color of your tongueâs surface. Oral lichen planus, leukoplakia, oral thrush and syphilis infection are also some of the causes for white coating on the tongue.