Solution of task 9.3.9 from the collection of Kepe OE

Solution of task 9.3.9 from the collection of Kepe OE

9.3.9
The rod AB of length 80 cm moves in the plane of the drawing. At some instant of time, the points A and B of the rod have accelerations aA = 5 m / s2, and B = 10 m / s2. Determine the angular acceleration of the rod. (Answer 6.25)