Porter Governor:

Effort = $p = \ C \ [ \frac{2m}{1 + q} + M] g$

Effort = $p = \ C \ [mg + Mg \pm F]$

Power = p.x $\rightarrow$ (lift of sleeve)

$x = 2h [ \frac{2C}{1 + 2C}] \ = \ 2(h_1 – h_2)$

$x = (1 + q) . h . [\frac{2C}{1 + 2C}]$

Power = $\frac{4C^2}{1 + 2C} \ ( m + \frac{M}{2} (1 + q) ]. g. h.$