1.
\begin{figure}[h]
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\caption{Figure 1}
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Figure 1 shows a particle \(P\) of mass 0.5 kg at rest on a rough horizontal plane.
- Find the magnitude of the normal reaction of the plane on \(P\).
The coefficient of friction between \(P\) and the plane is \(\frac { 2 } { 7 }\)
A horizontal force of magnitude \(X\) newtons is applied to \(P\).
Given that \(P\) is now in limiting equilibrium, - find the value of \(X\).