77. The ball of radius R = 10 cm and a weight of 5 kg m = rotates around the axis of symmetry according to the equation φ = A + Bt2 + Ct3 (B = 2 rad / s2, C = - 0.5 rad / c3). Determine the torque M for t = 3 s.

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