(Solved): A hydraulic punch press is used to punch a slot in a \( 10-\mathrm{mm} \)-thick plate, as illustra ...

A hydraulic punch press is used to punch a slot in a \( 10-\mathrm{mm} \)-thick plate, as illustrated. If the plate shears at a stress of \( 390 \mathrm{MPa} \), determine the minimum force \( P \) required to punch the slot. \[ \begin{array}{l} 512 \mathrm{kN} \\ 1063 \mathrm{kN} \\ 830 \mathrm{kN} \\ 686 \mathrm{kN} \\ 767 \mathrm{kN} \end{array} \]