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 Accidentally biting your tongue or scalding it on something straight out of the oven can result in a sore tongue until the damage heals. 2  Grinding or clenching the teeth can also irritate the sides of the tongue and cause it to become painful. 3  Smoking. 4  Smoking excessively can irritate your tongue and make it sore. So it is important for your dentist to determine the cause of white patches on your tongue. 2  Leukoplakia can develop when the tongue has been irritated, and it is often found in people who use tobacco products. 3  Oral thrush. 4  Also known as candidiasis, oral thrush is a yeast infection that develops inside the mouth.