(II) The platter of the hard drive of a computer rotates at 7200 rpm (revolution per minute) a) What is the angular velocity(rad/s) of the platter? (b) If the reading head of the drive is located 3.00 cm from the rotation axis, what is the linear speed of the point on the platter just below it? (c) If a single bit requires 0.50  μm of length along the direction of motion, how many bits per second can the writing head write when it is 3.00 cm from the axis?

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter10: Rotational Motion
Section: Chapter Questions
Problem 11P: A disk 8.00 cm in radius rotates at a constant rate of 1200 rev/min about its central axis....
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 (II) The platter of the hard drive of a computer rotates at 7200 rpm (revolution per minute) a) What is the angular velocity(rad/s) of the platter? (b) If the reading head of the drive is located 3.00 cm from the rotation axis, what is the linear speed of the point on the platter just below it? (c) If a single bit requires 0.50  μm of length along the direction of motion, how many bits per second can the writing head write when it is 3.00 cm from the axis?

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