The forces F1 = 21 N and F2 = 14.7 N act on the drum in

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The forces F1 = 21 N and F2 = 14.7 N act on the drum in the form of a homogeneous disk, 5 kg in mass and 25 cm in radius, as shown in the figure. The axis of rotation passes through the center of the disk perpendicular to the plane of the pattern. The moment of frictional forces relative to the axis of rotation is 0.4 Nm. Find the angular acceleration of the drum.

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Task 31642. A detailed solution with a brief description of the condition, formulas and laws used in the solution, the derivation of the formula and the answer.
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