11.2.4
The crank OA rotates according to the law φ = πt / 3. The lengths of the rods OA = AB = 0.25 m are given. The relative motion of the point M along the slider 1 is given by the equation x1 = 0.3 + 0.1sin (π / 6) t. Determine the modulus of the absolute velocity of the point M at time t = 1 s. (Answer 0.41)