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One end of a string of length L is tied to the ceiling of a lift accelerating upwards with an acceleration 2g .the other end of the string is free.the linear mass density of the string varies linearly from 0 to λ from bottom to top. (A) the velocity of the wave in the string will be 0. (B) the acceleration of the wave on the string will be 3g/4 everywhere. (C) the time taken by a pulse to reach from bottom to top will be √(8L/3g). (D) the time taken by a pulse to reach from bottom to top will be √(4L/3g).

One end of a string of length L is tied to the ceiling of a lift accelerating upwards with an acceleration 2g .the other end of the string is free.the linear mass density of the string varies linearly from 0 to λ from bottom to top.
 
(A) the velocity of the wave in the string will be 0.
(B) the acceleration of the wave on the string will       be 3g/4 everywhere.
(C) the time taken by a pulse to reach from                  bottom to top will be √(8L/3g).
(D) the time taken by a pulse to reach from                  bottom to top will be √(4L/3g).
 

Grade:12

1 Answers

Rituraj Tiwari
askIITians Faculty 1792 Points
one year ago
657-2447_Annotation 2020-08-28 205407.png

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