5.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{017cc2b0-9ec3-45ff-94c0-9d989badfd5d-16_757_460_246_804}
\captionsetup{labelformat=empty}
\caption{Figure 3}
\end{figure}
A small ring of mass 0.2 kg is attached to one end of a light inextensible string.
The ring is threaded onto a fixed rough vertical rod.
The string is taut and makes an angle \(\theta\) with the rod, as shown in Figure 3, where \(\tan \theta = \frac { 12 } { 5 }\)
Given that the ring is in equilibrium and that the tension in the string is 10 N ,
- find the magnitude of the frictional force acting on the ring,
- state the direction of the frictional force acting on the ring.
The coefficient of friction between the ring and the rod is \(\frac { 1 } { 4 }\)
Given that the ring is in equilibrium, and that the tension in the string, \(T\) newtons, can now vary, - find the minimum value of \(T\)
- find the maximum value of \(T\)