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.
Basically, this means the your mouth cells are overproducing, causing them to cluster on your tongue. Rather than a consistent film, people whose tongues are white from leukoplakia typically have more noticeable patches where surplus cells have gathered. These white spots can also form in other areas of your mouth.