Solution of task 9.7.13 from the collection of Kepe OE

Solution of task 9.7.13 from the collection of Kepe OE

9.7.13
The square plate ABDE moves in the Oxy plane. Determine the angular acceleration of the plate in this position if the length AB = 0.5 m, and the projections of the accelerations of the points A and B on the Oy axis are respectively equal to aAy = 3 m / s2 and aBy = 6 m / s2. (Answer 4)