Questions
If the length of a stretched string is shortened by 40% and the tension is increased by 44%, then the ratio of the final and initial fundamental frequencies is
detailed solution
Correct option is A
Fundamental frequency in case of string is n=12lTm⇒n∝Tl⇒n'n=T'T×ll'putting T'=T+0.44T=144100T and l'=l−0.4l=35l We get n'n=21Talk to our academic expert!
Similar Questions
A wire having a linear density of 5 g/m is stretched between two rigid supports with a tension of 450 N. It is observed that the wire resonates at a frequency of 420 Hz. The next highest frequency at which the same wire resonates is 490 Hz. Find the length of the wire. (in m)
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