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ValentinkaMS [17]
3 years ago
6

Information is stored on a compact disk in a coded pattern of tiny pits arranged in a track that spirals outward toward the rim

of the disk. As the disc spins inside a player, the track is scanned at constant linear speed by a stationary scanning head. How must the rotation speed of the disc change as the player's scanning head moves radially outward in order to scan the track at constant linear speed
Computers and Technology
1 answer:
Maksim231197 [3]3 years ago
5 0

Answer:

(i) The rotation speed must stay the same.

(ii) The rotation speed must increase.

(iii) The rotation speed must decrease.

Explanation:

According to Equation

10.10, the angular speed must therefore vary as the laser–lens system moves

radially along the disc. In a typical CD player, the constant speed of the surface at

the point of the laser–lens system is 1.3 m/s.

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