A homogeneous disk having a weight P = 124 N rotates with constant angular acceleration, and its motion is described by the equation φ = 30t2 + 2t + 1. The disk rotates under the action of a constant tangential tangential force Fτ = 90.2 N applied to the rim of the disk. Determine the moment of friction forces Mtr acting on the disk during rotation. Disk radius R = 0.15 m.
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