Solution of task 17.3.14 from the collection of Kepe OE

Solution of task 17.3.14 from the collection of Kepe OE

17.3.14
At the instant of time, bodies 1 and 3, whose masses are the same and equal to m = 0.6 kg, move with an acceleration a = 3 m / s2. Determine at this time the reaction modulus of the hinge of block 2. The mass of block 2 is neglected. (Answer 5.78)