I need help to solve this. I'm not sure how to deal with it. 14. The load 1 with the mass m1 is sliding along the face of the prism 2 with the mass m2 moving along the horizontal plane (fig. 14). The

I need help to solve this. I'm not sure how to deal with it.

14. The load 1 with the mass m1 is sliding along the face of the prism 2 with the mass m2 moving along the horizontal plane (fig. 14). The friction between the bodies is absent. The angle a is known. Find the minimal horizontal force F when the prism turn-over begins (i. e. the point C breaking-off from the surface).