$14\mathrm{.}52$ A $1\mathrm{.}80$ kg monkey wrench is pivoted $0\mathrm{.}250$ m from its center of mass and allowed to swing as a physical pendulum. The period for small$-$angle oscillations is $0\mathrm{.}940$ s$.($a$)$ What is the moment of inertia of the wrench about an axis through the pivot? $($b$)$ If the wrench is initially displaced $0\mathrm{.}400$ rad from its equilibrium position, what is the angular speed of the wrench as it passes through the equilibrium position?