Meriam, Kraige & Bolton — Plane Kinetics of Rigid Bodies: Problem 6_184

6/184 The uniform power pole of mass $m$ and length $L$ is hoisted into a vertical position with its lower end supported by a fixed pivot at $O$. The guy wires supporting the pole are accidentally released, and the pole falls to the ground. Plot the $x$- and $y$-components of the force exerted on the pole at $O$ in terms of $\theta$ from $0$ to $90^{\circ}$. Can you explain why $O_y$ increases again after going to zero?