15.2.5.
The body 1 moves vertically upward at a speed of v1 = 1 m / s. To the rod 2 of length OA = 0.2 m, which rotates about the horizontal axis O with a constant angular velocity? = 10 rad / s, a point weight A with a mass of 0.1 kg is attached. Determine the kinetic energy of the cargo at? = 60 °. (Answer 0.35)