17.3.44
The disk starts to rotate in a horizontal plane from a state of rest with an angular acceleration ε = 400 rad / s2. One end of a homogeneous rod with a mass of 0.3 kg is fixed in hinge A, and the second end rests on the rim. Determine at the initial moment of motion the reaction modulus at point B if r = 0.2 m (Answer 9.24)