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QI) A new computer drive is proposed to have a disc, as shown in Fig. 1. The disc is to rotate at 9,000 rpm, and the reader head is to be positioned 0.011 in. above the surface of the disc. Estimate the shearing force on the reader head as a result of the air between the disc and the head. Use v air 1.47 x 10-5 m² /s. Stationary reader head 6 mm dia, 9,000 rpm 0.011 mm - 55 mm Rotating disc Fig. (1).

QI) A new computer drive is proposed to have a disc, as shown in Fig. 1. The disc is to rotate at 9,000 rpm, and the reader head is to be positioned 0.011 in. above the surface of the disc. Estimate the shearing force on the reader head as a result of the air between the disc and the head. Use v air 1.47 x 10-5 m² /s. Stationary reader head 6 mm dia, 9,000 rpm 0.011 mm - 55 mm Rotating disc Fig. (1).

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Q1) A new computer drive is proposed to have a disc, as shown in Fig. 1. The dise is to rotate at 9,000 rpm, and the reader head is to be positioned 0.011 in. above the surface of the disc. Estimate the shearing force on the reader head as a result of the air between the disc and the head. Use v air = 1.47 x 10-5 m2/s. Stationary reader head 6 mm dia. 9,000 rpm 0.011 mm 55 mm Rotating disc Fig. (1).
Transcribed Image Text:Q1) A new computer drive is proposed to have a disc, as shown in Fig. 1. The dise is to rotate at 9,000 rpm, and the reader head is to be positioned 0.011 in. above the surface of the disc. Estimate the shearing force on the reader head as a result of the air between the disc and the head. Use v air = 1.47 x 10-5 m2/s. Stationary reader head 6 mm dia. 9,000 rpm 0.011 mm 55 mm Rotating disc Fig. (1).
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