Targ S.M. 1988 D1 option 56

Targ S.M. 1988 D1 option 56

A load D of mass m, having received at point A an initial velocity V₀, moves in a curved pipe ABC. In section AB, in addition to gravity, a constant force Q and a resistance force R of the medium act on the load. At point B, the load, without changing its speed, goes to the pipe section BC, where, in addition to gravity, the variable force F acts on it. Find the law of cargo movement on section BC. Neglect the friction of the load on the pipe. Given: m = 4kg; V₀ = 12m / s; Q = 10H; R = 0.8v²; L = 2.5m; Fx = 6cos (4t).

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