For 10 points, identify these numbers which quantify the effect of materials rubbing against each other, and for solids is commonly labeled "mu."
A quantity of this type is computed approximately by the Swamee-Jain equation, or implicitly by the Colbrook equation, and is graphed on the left axis of the Moody diagram. For laminar flow in fluid mechanics, this quantity is equal to 64 divided by the Reynolds number, and chemical engineers employ a quantity of this type named for Fanning. The product of this quantity and the angle of (*) wrap is exponentiated it the equation relating the tension in two ends of a belt going around a pulley. For many solid materials, the kinetic type of this quantity is approximated as 75 percent of the static type. For 10 points, identify these numbers which quantify the effect of materials rubbing against each other, and for solids is commonly labeled "mu."
A quantity of this type is computed approximately by the Swamee-Jain equation, or implicitly by the Colbrook equation, and is graphed on the left axis of the Moody diagram.
friction coefficients or friction factors or reasonable equivalent (accept Darcy friction factor before "solid mechanics;" prompt on just "friction"]