OCR MEI Further Mechanics Major 2023 June — Question 4

Exam BoardOCR MEI
ModuleFurther Mechanics Major (Further Mechanics Major)
Year2023
SessionJune
TopicMoments

4
\includegraphics[max width=\textwidth, alt={}, center]{41b1f65b-8806-4183-81a1-0276691e203c-04_598_696_255_246}
\includegraphics[max width=\textwidth, alt={}, center]{41b1f65b-8806-4183-81a1-0276691e203c-04_465_67_294_1023} A rigid lamina of negligible mass is in the form of a rhombus ABCD , where \(\mathrm { AC } = 6 \mathrm {~m}\) and \(\mathrm { BD } = 8 \mathrm {~m}\). Forces of magnitude \(2 \mathrm {~N} , 4 \mathrm {~N} , 3 \mathrm {~N}\) and 5 N act along its sides \(\mathrm { AB } , \mathrm { BC } , \mathrm { CD }\) and DA , respectively, as shown in the diagram. A further force \(\mathbf { F }\) N, acting at A, and a couple of magnitude \(G N m\) are also applied to the lamina so that it is in equilibrium.
  1. Determine the magnitude and direction of \(\mathbf { F }\).
  2. Determine the value of \(G\).