a = 4 ft b = 3 ft C = 2 ft d = 2.5 ft F1 = {-25i+20j+35k} lb F2 = {-12i-28j+40k} lb F Find the x-component of the moment of F1 (in Ib-ft) about O. If the calculated answer is not whole number, express it in 4 significant figures. If the value is negative, include a negative sign.

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A: F1=-25i⏜+20j⏜+35k⏜F2=-12i⏜+-28j⏜+40k⏜a=4 ftb=3 ftc=2 ftd=2.5 ft

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Types of loading

In mechanical terminology, the term load indicates that external force/weight, either constant or variable, acts on a mechanical member/structure. The weight of an object of a specific material is also an external load, and the external force that works on a structure comes under the categories of loading. The external load generates its effects as stress and strain in the structure.