Targ S.M. 1989 K4 variant 99

Targ S.M. 1989 K4 variant 99

A rectangular plate or a round plate of radius R=60cm rotates around a fixed axis according to the law j=f1(t). A point M moves along the plate along the straight line BD or along a circle of radius R; the law of its relative motion S=AM=f2(t), where S is expressed in centimeters and t in seconds. Find the absolute speed and absolute acceleration of the point M at the time t₁=1s.

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