Physics > 2008 > 11
WASSCE
The diagram above shows three forces F1, F2 and F3 which keep the bar AB in horizontal equilibrium. Which of the following equations is correct?
A.
F3 = F1 + F2
B.
F2 = F1 + F3
C.
F1 = F2 - **F3
D.
F1 = F2 + F3
Answer: D
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