Replace the force-couple system at point O by a single force. Specify the coordinate yA of the point on the y-axis through which the line of action of this resultant force passes.
The Attempt at a Solution
I'm not sure how to start this question and I don't understand how I'm supposed to interpret the circular arrow; I think it is a moment.
I think that the 280 N force pointing left would have a moment of zero because it passes through the origin (O), after this I'm not sure what to do with the circular arrow.
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