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.
Oral thrush, canker sores and leukoplakia are the most common causes of white spots on the tongue. Here are a few conditions that can cause white spots on your tongue, and when it's time to see your dentist. Oral thrush, an overgrowth of a naturally occurring fungus, often appears when the immune system is depressed.