The rigid frame is fixed at the point A by a hinge, and at the point B it is attached either to the weightless rod BB₁, or to the hinge support on the rollers; the rod is attached to the frame and to the fixed support by the hinges. A pair of forces act on the frame with the moment M = 100N · m and two forces. Determine the reaction of bonds at points A and B. In the final calculations take l = 0.5 m.
Given: E: α₂ = 30⁰; F₂ = 20H; K: α₄ = 45⁰; F₄ = 40H

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