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.
Red spots on tongue: may be inflammed taste buds. Doubt infection since they are painless and no other symptoms. You may have also accidentally burned them with hot coffee or tea. Salt water gargles - 1/4 teaspoon of salt in 4 oz warm water - gargle and spit out might help.