A hinged construction consists of three rhombus with the ratio of sides 3:2:1 (Fig. 10). Vertex ...

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A hinged construction consists of three rhombus with the ratio of sides 3:2:1 (Fig. 10). Vertex \( A_{3} \) moves in the horizontal direction at a velocity \( v \).
Fig. 10
Determine the velocities of vertices \( A_{1}, A_{2} \), and \( B_{2} \) at the instant when the angles of the construction are \( 90^{\circ} \).
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