Block and tackle - efficiency approximation - without friction factor
Description
f is the number of sheaves in the purchase, and there is a roughly % loss of efficiency at each sheave due to friction, then:
Related formulasVariables
| eff | mechanical efficiency of the system (equal to one for an ideal frictionless system; a fraction less than one for real-world systems with energy losses due to friction and other causes) (dimensionless) |
| S | number of sheaves in the purchase (dimensionless) |
| χ | loss of efficiency at each sheave due to friction (dimensionless) |