Steel piano wire-what angle must the tuning pin be turned

Reference no: EM13556353

A steel piano wire (Y = 2.0 x 10^11 Pa) has a diameter of 0.80 mm.One end is fixed in place and the other end is wrapped around atuning pin of diameter 8.0 mm. The length of the wire (notincluding the wire wrapped around the tuning pin) is 66 cm. Initially, the tension in the wire is 381 N. To tune the wire, the tension must be increased to 402 N, byturning the tuning pin. Through what angle must the tuning pin be turned?

Reference no: EM13556353

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