Question
A string of mass 2.50 kg is under the tension of 200N. The length of the stretched string is 20.0m. If the transverse jerk is struck at one end of the string, how long does the disturbance take to reach the other end?
Solution
Velocity of wave in stretched string is given by,
where,
T is the tension, and
m is the mass per unit length.
If 
is length of string then time taken by wave to reach the other end of string is, 
We have,
Therefore,
Time taken to reach the other end of the string is,
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