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A string of length 20 cm and linear mass...

A string of length `20 cm` and linear mass density `0.40 g//cm` is fixed at both ends and is kept under a tension of `16 N.A` wave pulse is produced at `t=0` near an end as shown in figure which travels towards the other end.
when will the string have the shape shown in the figure again? (in `xx10^(-2)s`)

Text Solution

Verified by Experts

The correct Answer is:
2
velocity of the wave,
`V=sqrt(((T)/(mu)))=sqrt(((16xx10^(5)))/(0.4))=2000 cm//s`
time taken to reach to the other end `=(20)/(200)=0.01 s.` time taken to see the pulse again in the original position `=0.01xx2=0.02s`.
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Knowledge Check

  • A string of length 10.0 m and mass 1.25kg stretched with a tension of 50N. If a transverse pulse is created at one end of the string, how long does it take to reach the other end ?

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