47. A homogeneous disc having weight P H = 124 rotates

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47. A homogeneous disc having weight P H = 124 rotates with a constant angular acceleration, and the motion is described by equation (φ = 30t2 + 2t + 1). The disc is rotated by the constant tangential tangential force Fτ = 90,2 N is applied to the rim of the disc. Determine friction torque inputs, acting on the disk during rotation. Disk radius R = 0,15 m.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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