The device shown is used for coarse adjustment of the height of an experimental apparatus without a change in its horizontal position. Because of the slip joint at A, turning the screw does not rotate the cylindrical leg above A. The mean diameter of the thread is 3/8 in. and the coefficient of friction is 0.21. For a conservative design which neglects the friction at the slip joint, what should be the minimum number N of threads per inch to ensure that the single-threaded screw does not turn by itself under the weight of the apparatus? (Do not round off your answer to a whole number. Include two decimal places on your answer.) A

The device shown is used for coarse adjustment of the height of an experimental apparatus without a change in its horizontal position. Because of the slip joint at A, turning the screw does not rotate the cylindrical leg above A. The mean diameter of the thread is 3/8 in. and the coefficient of friction is 0.21. For a conservative design which neglects the friction at the slip joint, what should be the minimum number N of threads per inch to ensure that the single-threaded screw does not turn by itself under the weight of the apparatus? (Do not round off your answer to a whole number. Include two decimal places on your answer.) A

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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