Question

A string 1 m long having mass of 4 g is fixed fixed at both ends is under pressure of 160 N the frequency of fundamental mode is

Answer 1

Answer:

μ=

l

m

=

25×10

−2

2.5×10

−3

=10

−2

Kg/m

1 st overtone ,

λ

s

=25cm=0.25m

f

s

=

λ

s

1

μ

T

=

0.25

1

10

−2

T

Pipe in fundamental frequency ,

4

λ

=40

λ

p

=160cm=1.6m

f

p

=

λ

p

v

=

1.6

320

f

s

−f

p

=8

4

10

−2

T

−

1.6

320

=8

T×10

2

=52

T=2704×10

−2

=27.04N