A slider crank mechanism with crank radius $200\:mm$ and connecting rod length $800\:mm$ is shown. The crank is rotating at $600\:rpm$ in the counterclockwise direction. In the configuration shown, the crank makes an angle of $90^\circ$ with the sliding direction of the slider, and a force of $5\:kN$ is acting on the slider. Neglecting the inertia forces, the turning moment on the crank (in $kN-m$) is __________
