Answered: A B Cube Bar

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A B Cube Bar

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Question

A uniform 165 N bar is
supported horizontally by two identical
wires A and B (Fig. ). A
small 185 N cube of lead is placed
three-fourths 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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