Two long strings P and Q ,each having linear mass density 1.2 x 10^-2
are stretched by a different tension 4.8 N and 7.5 N respectively and are kept parallel to each other with their left ends at x=0.Wave pulses are produced on the strings at t=0 on string P and at t=20ms at string Q.When and where will the pulses on Q overtake at on P.
The Attempt at a Solution
Using the wave equation for the string ,I found the velocity at x=0 for P and Q to be 20m/s and 25m/s respectively.But I have one doubt about this question.Shouldn't speed of a wave in a string change with respective positions due to change in tension throughout the string......So does this not contradict the question
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