Solution of task 15.3.9 from the collection of Kepe OE
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15.3.9
On a wire ABC, located in a vertical plane and curved in the form of arcs of circles of radii r1, = 1 m, r2 = 2 m, can slide frictionless ring D with a mass m. Determine the speed of the ring at the point C, if its velocity at the point A is zero. (Answer 9.90)