Four people are attempting to move a stage platform across the floor. If they exert the horizontal forces shown, determine (a) the equivalent force-couple system at O and (b) the points on the x- and y-axes through which the line of action of the single resultant force R passes. Assume F₁ = 72 lb, F2 = 61 lb, F3 = 43 lb, F4 = 73 lb,a=85 in., b= 72 in., and = 44° F.

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Four people are attempting to move a stage platform across the floor. If they exert the horizontal forces shown, determine (a) the
equivalent force-couple system at O and (b) the points on the x- and y-axes through which the line of action of the single resultant force
R passes.
Assume F₁ = 72 lb, F₂ = 61 lb, F3 = 43 lb, F4 = 73 lb, a = 85 in., b = 72 in., and 0 = 44%
F₂
F₁
Answers:
R
b
(a) The force-couple system at O:
=
Mo-
| A
i
B
C
F₂
i+i
k lb-in.
Ө
-x
j) lb
Transcribed Image Text:Four people are attempting to move a stage platform across the floor. If they exert the horizontal forces shown, determine (a) the equivalent force-couple system at O and (b) the points on the x- and y-axes through which the line of action of the single resultant force R passes. Assume F₁ = 72 lb, F₂ = 61 lb, F3 = 43 lb, F4 = 73 lb, a = 85 in., b = 72 in., and 0 = 44% F₂ F₁ Answers: R b (a) The force-couple system at O: = Mo- | A i B C F₂ i+i k lb-in. Ө -x j) lb
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