Physics, 19.11.2019 00:31 logan12345677885675

Adigital audio compact disc carries data, each bit of which occupies 0.6 µm along a continuous spiral track from the inner circumference of the disc to the outside edge. a cd player turns the disc to carry the track counterclockwise above a lens at a constant speed of 1.40 m/s.
(a) find the required angular speed at the beginning of the recording, where the spiral has a radius of 2.60 cm. rad/s
(b) find the angular speed at the end of the recording, where the spiral has a radius of 5.70 cm. rad/s
(c) a full-length recording lasts for 74 min 33 s. find the average angular acceleration of the disc. rad/s²
(d) assuming that the acceleration is constant, find the total angular displacement of the disc as it plays. rad
(e) find the total length of the track.

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