A sonometer wire of length 1.5m is made of steel. The tension in it produce an elastic strain of 1%. What is the fundamental frequency of transverse vibrations in Hz if density and young’s modulus of steel are and respectively?
Given length of wire
Young’s modulus
Stress=Tension/Cross section area
=
Strain=1%=0.01
Volume density
Linear density
Velocity of transverse wave on the sonometer wire
Fundamental note has a wave length
So, frequency= .
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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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