79. The disc of radius R = 10 cm is rotated so that the

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79. The disc of radius R = 10 cm is rotated so that the rotation angle dependence of the radius of the disc on the time given by the equation φ = A + Bt3 (A = 2 rad; B = 4 rad / c3). To determine points on the wheel rim 1) an acceleration field at time t = 2; 2) tangential acceleration for the same moment; 3) The rotation angle φ, at which the full acceleration of the wheel with the radius of the angle α = 45 °.

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


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