Meeting the challenge of D1 Option 72 Reshebnik on theoretical mechanics manuals SM Targ 1983.
Conditions D1 problem (p. 29-31 Taskbook Targ SM 1983):
Cargo weight D m, A received at an initial speed v0, moves in a curved pipe ABC, situated in a vertical plane; pipe sections, or both slope, or one horizontal and one inclined (Fig. D1.0, D1.9 Table. D1). Figure AB in goods other than gravity are constant force Q (its direction is shown in the figures) and the strength of the medium resistance R, it depends on the load speed v (directed against the motion).
At the point in the load, without changing the values of its speed, the sun moves to the tube station, where he was except gravity acting variable force F, which Fx projection on the x-axis is given in the table.
Considering the load of the material point and knowing the distance AB = l and the time t1 the movement of cargo from point A to point B. Find the cargo movement in the portion BC, ie x = f (t), where x = BD. Friction load of neglected pipe.
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The task performed by the methodical instructions and control tasks for part-time students of thermal power, mining, metallurgy, electro-instrument-making, automation and technological specialties universities.
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