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A 2.8 m long wire having a mass of 0.14 kg is fixed at both ends...

A 2.8 m long wire having a mass of 0.14 kg is fixed at both ends and is under tension of 37 N. When the nth harmonic is excited, there is a node 0.56 m from one end.

(a) What is n?

n =

(b) What are the frequencies of the first three allowed modes of vibration?

f1 = Hz

f2 = Hz

f3 = Hz

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56 714 2 L

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