where is the centripetal acceleration. The direction of the force is toward the center of the circle in which the object is moving, or the osculating circle (the circle that best fits the local path of the object, if the path is not circular). The speed in the formula is squared, so twice the speed needs four times the force.
PVA (polyvinyl acetate). PVA's are the traditional wood glues, and some of the most common adhesives. They are also called aliphatic resins. They provide a strong wood-to-wood bond but will not adhere strongly or consistently to nonporous materials, such as metal or plastics.
There are many recipes around for ways of making slime, lots based on PVA glue. This recipe is however a bit different, and is very similar to the commercially available slime toys. There are many other recipes for making goo, both on Instructables and other places on the web as well as commercial products, so why use this one?