Katrol sederhana

Diagram gaya

Tinjau sistem

\begin{equation*}
\begin{split}
\Sigma F & = m \:.\: a \\\\
w_B - w_A & = (m_A + m_B) \:.\: a \\\\
60 - 40 & = (6 + 4) \:.\: a \\\\
a & = 2 \text{ m/s}^2
\end{split}
\end{equation*}