Block efficiency factor
Input(s)
F: Friction Factor (unitless)
\(\mathrm{n}\): No. of Rolling Sheaves (unitless)
Output(s)
E: Block Efficiency Factor (unitless)
Formula(s)
\[
\mathrm{E}=\frac{\mathrm{F}^{\mathrm{n}}-1}{\mathrm{~F}^{\mathrm{n}} * \mathrm{n} *(\mathrm{~F}-1)}
\]
Reference(s)
Samuel E. Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015. Houston, Texas, Page: 11.