Solution of task 11.5.6 from the collection of Kepe OE

Solution of task 11.5.6 from the collection of Kepe OE

11.5.6
On the side of the triangle rotating around the side AB with angular velocity ω, the point M moves with the relative velocity vr = 3t2. Determine the modulus of relative acceleration of point M at time t = 2 s. (Answer 12)