Edexcel M1 2017 June — Question 5

Exam BoardEdexcel
ModuleM1 (Mechanics 1)
Year2017
SessionJune
TopicNewton's laws and connected particles

5. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{c809d34e-83db-4a16-a831-001f9f36b1c3-14_346_241_262_845} \captionsetup{labelformat=empty} \caption{Figure 2}
\end{figure} A vertical light rod \(P Q\) has a particle of mass 0.5 kg attached to it at \(P\) and a particle of mass 0.75 kg attached to it at \(Q\), to form a system, as shown in Figure 2. The system is accelerated vertically upwards by a vertical force of magnitude 15 N applied to the particle at \(Q\). Find the thrust in the rod.