In this problem, we will compare and contrast the performance of the two lug nut wrench designs de- picted in the figure below. A user applies forces FA and Fc directed perpendicular to the plane ABCD of the lug nut wrench in figure (a). Forces QA and Qc are directed perpendicular to the plane ABCD of the lug but wrench in figure (b). The pair of forces in each case constitute force couples. 25 mm 40 mm (a) 40 mm tec 25 mm 25 mm (b)
In this problem, we will compare and contrast the performance of the two lug nut wrench designs de- picted in the figure below. A user applies forces FA and Fc directed perpendicular to the plane ABCD of the lug nut wrench in figure (a). Forces QA and Qc are directed perpendicular to the plane ABCD of the lug but wrench in figure (b). The pair of forces in each case constitute force couples. 25 mm 40 mm (a) 40 mm tec 25 mm 25 mm (b)
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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
Transcribed Image Text:In this problem, we will compare and contrast the performance of the two lug nut wrench designs de-
picted in the figure below. A user applies forces FA and Fc directed perpendicular to the plane ABCD
of the lug nut wrench in figure (a). Forces QA and Qc are directed perpendicular to the plane ABCD
of the lug but wrench in figure (b). The pair of forces in each case constitute force couples.
25 mm
40 mm
(a)
1
40 mm
12c
25 mm
D
25 mm
(b)
a Assuming FA = QA = 120 N, compute Fc and Qc, and the moment of each corresponding couple.
b Independent measurements conducted by an auto manufacturer have shown that a moment of 8000
Nm about the x-axis at point D is required to loosen the lug nut. Based on this knowledge, compute
the forces FA, Fc required to loosen the nut using the lug wrench in figure (a), and QA, Qc required
to loosen the nut using the lug wrench in figure (b).
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