A double threaded Acme screw of 1.5-in major diameter is used in a jack to raise a 6.5 kip load. The jack has a plain thrust collar with 2.2-in mean diameter and the coefficients of kinetic friction are estimated as 0.12 for the collar and 0.15 for the screw. If the screw has the following parameters lead 0.5 in, thread angle in the normal plane 14.4, and mean diameter 1.375 in, determine the running efficiency of the jack in raising the load. N] X 35

A double threaded Acme screw of 1.5-in major diameter is used in a jack to raise a 6.5 kip load. The jack has a plain thrust collar with 2.2-in mean diameter and the coefficients of kinetic friction are estimated as 0.12 for the collar and 0.15 for the screw. If the screw has the following parameters lead 0.5 in, thread angle in the normal plane 14.4, and mean diameter 1.375 in, determine the running efficiency of the jack in raising the load. N] X 35

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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