Question

a string has mass per unit length 2.25 and tension is 10n what's the velocity​

Answer 1

Answer:

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Answer 2

Answer:0.16N

Explanation:

The given wave equation         y=0.2sin(2x+80t)

Comparing it with      y=Asin(kx+wt)

⟹k=2N/m;w=80rad/s

Velocity of the waves      v=  

k

w

​  

=  

2

80

​  

=40m/s

Given:   Mass of string per unit length        μ=10  

−6

kg/cm=10  

−4

kg/m

Let tension in the string be    T.

Thus   v=  

μ

t- 40=  

10  

−4

 

T

​  

 

​  

⟹T=0.16N