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.
Resin glue is a type of adhesive used in the construction industry that provides superior bonding capabilities.rea Resins. Available in powdered or liquid forms, urea resin glues are used for laminating and veneering. This glue is ideal for water-and heat-resistant construction applications. In liquid form, it has a powdered catalyst, while the powdered version has the urea and formaldehyde components already mixed.