A 45 cm diameter disk rotates with a constant angular acceleration of 2.50

Описание к видео A 45 cm diameter disk rotates with a constant angular acceleration of 2.50

A 45.0-cm diameter disk rotates with a constant angular acceleration of 2.50 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. At t = 2.30 s, find (a) the angular speed of the wheel, (b) the linear velocity and tangential acceleration of P, and (c) the position of P (in degrees, with respect to the positive x-axis).

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