Solution of task 13.7.9 from the collection of Kepe OE

Solution of task 13.7.9 from the collection of Kepe OE

13.7.9
The body 1 moves along rectilinear guides 2. Inside the body there is a channel in the form of an arc of a circle, but to which a ball 3 of mass m moves. Determine the acceleration, a1 of the body 1, if at an angle? = 60 ° the ball is in a state of relative rest. (Answer 5.66)