$${\begin{align*}
P_\text{tõste} &= \frac{\text{silindri kineetiline energia}}{aeg}\\
\\&= \frac{1}{t} \frac{1}{2} m_\text{silinder} u^2 \\
&= \frac{1}{2t} \rho vtA_s (\frac{mg}{\rho v A_s})^2\\
&= \frac{1}{2} \frac{(mg)^2}{\rho v A_s}
\end{align*}}$$