The coefficient of kinetic friction is defined as
where is the frictional force and is the normal force. Some values for common substances are given in the following table (Weast 1981).
Friction, Frictional Force, Normal Force, Starting Friction, Static Friction
References
O'Hanian, H. C. Physics, Vol. 1. New York: W. W. Norton, p. 131, 1985.
Weast, R. C. (Ed.). Handbook of Chemistry and Physics, 61st ed. Boca Raton, FL: CRC Press, p. F-23, 1981.
