7.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{ee3cbd24-55b1-4003-85bb-26d98f79a118-6_271_683_367_717}
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\caption{Fig. 3}
\end{figure}
A small parcel of mass 2 kg moves on a rough plane inclined at an angle of \(30 ^ { \circ }\) to the horizontal. The parcel is pulled up a line of greatest slope of the plane by means of a light rope which it attached to it. The rope makes an angle of \(30 ^ { \circ }\) with the plane, as shown in Fig. 3. The coefficient of friction between the parcel and the plane is 0.4
Given that the tension in the rope is 24 N ,
- find, to 2 significant figures, the acceleration of the parcel.
The rope now breaks. The parcel slows down and comes to rest.
- Show that, when the parcel comes to this position of rest, it immediately starts to move down the plane again.
- Find, to 2 significant figures, the acceleration of the parcel as it moves down the plane after it has come to this position of instantaneous rest.