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Question

An object is in equilibrium under four concurrent forces in the directions shown in figure. Find the magnitudes of F1 and F2.
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Solution

The object is in equilibrium. Hence,
(i) ΣFx=0
8+4cos60F2cos30=0
or 8+2F232=0
or F2=203N
(ii) ΣFy=0
F1+4sin60F2sin30=0
or F1+432F22=0
or F1=F2223=10323
or F1=43N
254648_244925_ans.png

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