A piano wire 0.82 m long and 0.93 mm in diameter is fixed on one end. The

Question:

A piano wire 0.82 m long and 0.93 mm in diameter is fixed on one end. The other end is wrapped around a tuning peg 3.5 mm in diameter. Initially the wire, whose Young's modulus is 2.4 × 1010 N/m2, has a tension of 14 N. Find the tension in the wire after the tuning peg has been turned through one complete revolution?