# Termehu Targ D7 B23 solution to the problem (Figure 2 conv 3) 1989

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Solution of the D7 Option 23 - termehu of Targa SM 1989. Conditions to the problem of dynamics 7 (page 78): The drum of radius R weight P is recessed (as coil) of radius r = 0,6R (Fig. D7.0 - D7.9, Table. D7). To the ends of yarns wound on the drum constant applied force F1 and F2, which are determined by the direction angle Betta; in addition to the forces acting on the drum with a pair of point M; When in Table M <0, the direction opposite to the time shown in the figure. When driving, starting from rest, the drum rolls without slipping on an inclined plane with a rough angle α as shown in Figs. Neglecting the rolling resistance, to determine the law of motion of the center of mass C of the drum, ie. E. XC = f (t), and the smallest value of the friction coefficient f of the plane in which the rolling is possible without slipping. The drum is regarded as a solid uniform cylinder of radius R.