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 are various reasons that can cause white bumps to appear on the back of your tongue. In the first place, it is important to understand that you have normal bumps on the back of the tongue. It is natural for everybody to have some bumps at the back of the tongue. The size may vary from tiny bumps to large from one person to the other.