question_answer 3)

A steel wire has a length of 12.0 m and a mass of 2.10 kg. What should be the tension in the wire so that speed of a transverse wave on the wire equals the speed of sound m dry air at 20°C = 343 .

Answer:

Here, I = 12.0 m, M= 2.10 kg, T= ?,  = 343 . mass per unit length As,