The cord of a musical instrument is fixed at both ends and has a length L m, diameter d mm, and density pkg/m3. (a) Find the tension required in order to have a fundamental frequency offi Hz. (b) Determine the velocity of wave propagation, c in the cable. (c) Determine the third natural frequencies of vibration of the cable, if tension is increased by 15%. Wire Lenth, L =2.50m , Dia, d =0.8(mm), d =0.0008(m), Density=7925(kg/m3), p=0.003983539(kg/m) and f1= 4(Hz)