Solution of task 11.2.20 from the collection of Kepe OE
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11.2.20
The cone, according to the generator of which the point M moves according to the equation AM = 2t, rotates about the axis Oz according to the law φ = 4 sin 0,4t. Determine the modulus of the mobile velocity of point M at time t = 2 s. (Reply 2.19)