A uniform 165 N bar is supported horizontally by two identical wires A and B (the figure ). A small 185 N cube of lead is placed 3/4 of the way from A to B. The wires are each 75.0 cm long and have a mass of 5.50 g. If both of them are simultaneously plucked at the center, what is the frequency of the beats that they will produce when vibrating in their fundamental?

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