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 = 69 lb, F₂ = 79 lb, F3 = 38 lb, F4 - 63 lb, a = 79 in., b-65 in., and 0 = 47° F A B F₁ 4 F₁ b F₁ 0
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 = 69 lb, F₂ = 79 lb, F3 = 38 lb, F4 - 63 lb, a = 79 in., b-65 in., and 0 = 47° F A B F₁ 4 F₁ b F₁ 0
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Transcribed Image Text:Answers:
(a) The force-couple system at O:
R=
(i
i+
i
Mo=
k lb-in.
(b) The line of action of the single resultant R:
On the x-axis X=
i
On the y-axis y =
i
in.
in.
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 = 69 lb, F2 = 79 lb, F3 = 38 lb, F4- 63 lb, a = 79 in., b = 65 in., and 0 = 47°
A
B
0
k
F₁
b
0
F₁
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