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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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

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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

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