Solution D1 Option 13 (Fig. 1 conv. 3) termehu Targ 198

The solution to the problem D1 Option 13 on the thermo from the task book Targ S.М. 1988. Condition for the task from the section Dynamics 1 (p. 32 in the training manual Targ S.M.): A load D of mass m, having received at point A an initial speed v0, moves in a bent pipe ABC located in a vertical plane; sections of the pipe are either both inclined, or one horizontal and the other inclined (Fig. D1.0-D1.9 of Table D1). In Figure AB, in addition to gravity, a constant force Q acts on the load (its direction is shown in the figures) and the resistance force of the medium R depends on the speed of the load v (directed against movement). At point B, the load, without changing the value of its speed, passes to the pipe section of the pipe, where in addition to gravity, a variable force F acts on it, the projection of which Fx on the x axis is given in the table. Assuming the load to be a material point and knowing the distance AB = l or the time t1 of the movement of the cargo from point A to point B. Find the law of movement of the cargo in the aircraft section, i.e. x = f (t), where x = BD. Neglect the friction of the load on the pipe.