Тарг С.М. 1988 К3 вариант 83

A rectangular plate or a round plate of radius R = 60 cm rotates around a fixed axis with an angular velocity w (with a minus sign, the direction is opposite to that shown in the figure). Along a plate along a straight line BD or along a circle of radius R; i.e. along the rim of the plate; point M is moving; the law of its relative motion S=AM. In all figures, point M is shown in position; where S=AM>0 (when S<0 point M is on the other side of point A). Find the absolute speed and absolute acceleration of the point M at the time t1=1s.

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