Targ S.M. 1988 K1 variant 92

Targ S.M. 1988 K1 variant 92

Point B moves in the xy plane; the trajectory of a point in the figures is shown conditionally. The law of motion of the point is given by the equations x = f1 (t), y = f2 (t), where x and y are expressed in centimeters, t - in seconds. Find the equation of the trajectory of the point; for time t1 = 1c, determine the speed and acceleration of the point, as well as its tangent and normal accelerations and the radius of curvature at the corresponding point of the trajectory. Given: x=4-8cos(пt/6); y=12sin²(пt/6).

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