A compact disk (CD) stores music in a coded pattern of tiny pits etched into its surface along a track that spirals outward toward the rim of the disk. The inner and outer radii of this spiral are 25.0 mm and 58.0 mm. As the disk spins in a CD player, the track is scanned at a constant linear speed of 1.25 m/s.
a)What is the angular speed of the CD when scanning theinnermost part of the track? the outtermost part of thetrack?
b)the maximum playing time of a CD is 74.0 minutes. whatwould be the length of the track on such a maximum-duration CD ifit were stretched out in a straight line?
c) what is the average angular acceleration of amaximim-duration CD during its 74.0 minutes playing time? take the direction of rotation of the disc to be positive.
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