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.
1 Pimples on tongue can be a result of some kind of injury to the tongue caused by scraping or biting.  Oral thrush or oral candidiasis â a yeast infection â can also cause pimples on tongue. This is a fungal infection and you may see pimples on other parts of the body as well like the armpits or groin.