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.
Creamy white lesions on the tongue are one sign of thrush; other symptoms include: White patches in other areas of the mouth. Lesions that look like cottage cheese. Red, cracked corners of the mouth and lips. Loss of taste. Cotton mouth or dry mouth. Scraping oral thrush spots usually removes the white coating, but this can also cause slight bleeding. Canker Sores. A white spot on the tongue surrounded by a red, inflamed halo is probably a canker sore. These common and recurring lesions can be small or large and appear on its own or in groups.