A piano technician wants a wire to produce the 5th harmonic note of

PHYSICS · Subjective · A Level · Physics · Waves · Waves

Problem

880\,\text{Hz}

. The wire is to be kept under a tension of

400\,\text{N}

and has a linear mass density of

9.0\times10^{-4}\,\text{kg m}^{-1}

. Calculate the required length of the wire.