A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the outside edge. Each bit occupies 0.60 mm of the track. A CD player turns the disc to carry the track counter-clockwise above a lens at a constant speed of 1.3 m/s. (d) Assuming the acceleration is constant, find the total angular displacement of the disc as it plays from the outside at 2.30 cm to the inside at 5.80 cm.

(a) Angular speed at the beginning of the recording, where the spiral has a radius of 2.3 cm. = I got 56.52

(b) Angular speed at the end of the recording, where the spiral has a radius of 5.8 cm. = I got 22.41

(c) A full- length recording lasts for 74 min and 33 s. Find the average angular acceleration of the disc as it spins from the outside at 2.30 cm to the inside at 5.80 cm. = I got -.0076

(d) Assuming the acceleration is constant, find the total angular displacement of the disc as it plays from the outside at 2.30 cm to the inside at 5.80 cm.= ?