Solution of task 14.1.17 from the collection of Kepe OE

Solution of task 14.1.17 from the collection of Kepe OE

14.1.17
Determine the projection of the acceleration of the center of mass C of the mechanical system on the Oy axis at the time when the coordinate yC = 0.8 m, if the mass of the system is m = 10 kg, and the principal vector of the applied external forces is Re = 3i + 6tj. At the initial time, the center of mass of the system was at the point O at rest. (Answer 1.2)