Solution of task 7.8.5 from the collection of Kepe OE
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7.8.5
The point moves along the circle. Determine the radius of the circle if, at a time when the velocity v = 10 m / s, the acceleration vector and the velocity vector, which is 1.2 m / s modulo 1.20 / s, form an angle of 30 °. (Answer 167)