Bidang Miring
Diagram gaya bidang miring
\begin{equation*} \begin{split} \Sigma F_y & = 0 \\\\ N - w \:.\: \cos \theta & = 0 \\\\ N & = w \:.\: \cos \theta \end{split} \end{equation*}
\begin{equation*} \begin{split} \Sigma F_x & = m \:.\: a \\\\ w \:.\: \cos \theta - f_k & = m \:.\: a \\\\ w \:.\: \cos \theta - \mu_k \:.\: N & = m \:.\: a \end{split} \end{equation*}
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