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.
A more common cause of red dots on tongue that hurt (painful red spots on tongue) is inflamed papillae. This can be due to âburns, traumatic injury, eating spicy/hot food or beverages, or accidentally biting your tongue. Smokers commonly get these dots that usually resolve themselvesâ [healthtap.com].