6 A uniform ruler AB has mass 28 g and length 30 cm . As shown in Fig. 6, the ruler is placed on a horizontal table so that it overhangs a point C at the edge of the table by 25 cm .
A downward force of \(F \mathrm {~N}\) is applied at A . This force just holds the ruler in equilibrium so that the contact force between the table and the ruler acts through C .
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{7de77679-59c0-4431-a9cb-6ab11d2f9062-05_188_1431_502_246}
\captionsetup{labelformat=empty}
\caption{Fig. 6}
\end{figure}
- Complete the force diagram in the Printed Answer Booklet, labelling the forces and all relevant distances.
- Calculate the value of \(F\).
Answer all the questions.
Section B (78 marks)