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 = 81 lb, F2 = 77 lb, F3 = 36 lb, F4 = 55 lb, a = 89 in., b = 79 in., and 0 = 49° F. F.. | A B Ө

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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7. use correct sig fig

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 = 81 lb, F₂ = 77 lb, F3 = 36 lb, F4 = 55 lb, a = 89 in., b = 79 in., and 0 = 49°
F₁
F₂
F₁
b
Answers:
R= (i
Mo=
O
(a) The force-couple system at O:
i
|A
a
B
C
F₂
i+ i
k lb-in.
8
j) lb
B
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 = 81 lb, F₂ = 77 lb, F3 = 36 lb, F4 = 55 lb, a = 89 in., b = 79 in., and 0 = 49° F₁ F₂ F₁ b Answers: R= (i Mo= O (a) The force-couple system at O: i |A a B C F₂ i+ i k lb-in. 8 j) lb B
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