5.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{717c6949-db0f-4c2b-87a6-a7adf8c30a9e-08_597_981_217_461}
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\caption{Figure 2}
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A uniform rod \(A B\) has mass 4 kg and length 1.4 m . The end \(A\) is resting on rough horizontal ground. A light string \(B C\) has one end attached to \(B\) and the other end attached to a fixed point \(C\). The string is perpendicular to the rod and lies in the same vertical plane as the rod. The rod is in equilibrium, inclined at \(20 ^ { \circ }\) to the ground, as shown in Figure 2.
- Find the tension in the string.
Given that the rod is about to slip,
- find the coefficient of friction between the rod and the ground.