Find the angular speed of the compact disc

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Reference no: EM13673431

A compact disc (CD) stores music in a coded pattern of tiny pits 10^-7 meter deep. The pits are arranged in a track that spirals outward toward the rim of the disc; assume the inner and outer radii of this spiral are 26.0 millimeter and 52.0 millimeter, correspondingly. As the disc spins inside a CD player, the track is scanned at a constant linear speed of 1.19 m/s.

(a) Find the angular speed of the compact disc (CD) when the innermost part of the track is scanned? The outer most part of the track?

ω_innermost = rad/s

ω_outermost = rad/s

(b) If the maximum playing time of a CD is 71.0 minute. Find what would be the length of the track on such a maximum-duration CD if it were stretched out in a straight line?

(c) Find the average angular acceleration of a maximum-duration CD during its 71.0 minute playing time? Take the direction of rotation of the disc to be positive.

rad/s²

Reference no: EM13673431

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