Question

calculate the speed of mechanical wave in rail road track made of steel Young's modulas is 2×10^11Nm2 it's density is 7.8×10^3 kgm^3 if the frequency of the source is 240 Hz what is the Wave length of waves in steel​

Answer 1

Answer:

The speed of longitudinal waves in a solid(steel bar) is given by

v=

ρ

Y

where, Y is the Young's modulus of steel bar and ρ is the

density of steel bar.

v=

7800

2×10

11

v=

0.002564×10

10

v=0.05063×10

5

v=5063≈5100ms

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