| Exam Board | OCR |
|---|---|
| Module | H240/03 (Pure Mathematics and Mechanics) |
| Year | 2017 |
| Session | Specimen |
| Marks | 4 |
| Topic | Forces, equilibrium and resultants |
| Type | Resultant of coplanar forces |
| Difficulty | Moderate -0.8 This is a straightforward vector resolution question requiring basic trigonometry (likely parallelogram/triangle of forces or component method). With only 4 marks total and standard M1 content, it's below average difficulty—more routine than the typical multi-step A-level question, but not trivial since it requires correct application of vector methods and angle calculation. |
| Spec | 3.03p Resultant forces: using vectors |
Two forces, of magnitudes 2 N and 5 N, act on a particle in the directions shown in the diagram below.
\includegraphics{figure_9}
\begin{enumerate}[label=(\alph*)]
\item Calculate the magnitude of the resultant force on the particle. [3]
\item Calculate the angle between this resultant force and the force of magnitude 5 N. [1]
\end{enumerate}
\hfill \mbox{\textit{OCR H240/03 2017 Q9 [4]}}