(Solved): When the bent bar is in the position shown the spring with a stiffness of \( k \) is stretched \( ...

When the bent bar is in the position shown the spring with a stiffness of \( k \) is stretched \( 9 \mathrm{~mm} \). The bent bar is pinned at \( D \) and rests on a smooth pivot at \( C \). Determine the magnitude of the load \( P \) that can be applied to break contact with the surface at \( C \) (e.g., the normal force at \( C \) will be 0 ). Then find the corresponding reaction forces at \( D \). Use the given values of: \( k=1850 \frac{\mathrm{N}}{\mathrm{m}} \) \[ \begin{array}{l} b=52 \mathrm{~mm} \\ h=46 \mathrm{~mm} \end{array} \]