Do not round intermediate calculations; however, for display purposes intermedia

Question

Do not round intermediate calculations; however, for display purposes intermediate steps rounded to four significant figures. Give your final answer(s) to significant figures The manufacturer of an automobile is considering the two designs shown for the vehicle's lug nut wrench. Forces FA , FC, QA , and QC are applied by the user to the wrench; these force are perpendicular to plan ABCD and are to be couples. If a moment about the x axis at point D of 7,900 N mm is required to loosen the lug nut, the values of FA, FC, QA, and QC. FA = N FC = N QA = N QC = N

Explanation / Answer

(Fa+Fc)*29mm=7900Nmm since the forces are couples;Fa=Fc,Qa=Qc Fa=Fc=7900/29=272.413N Qa*40=7900=>Qa=197.5N Qa=Qc=197.5N

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