AP EAMCET Engineering 26 Apr 2017 Shift 1 Paper

The equation of the transverse displacement is,
y=0.03‌sin(

2πx

3

)‌cos‌60‌π‌t ......(I)
The mass per unit length is given as, µ=0.01‌kg∕m
The general equation of transverse displacement is,
y=a‌sin‌k‌x‌cos‌ω‌t
Comparing the above equation with equation (I),
ω=60π,k=

2π

3

The formula for the velocity is,
v=√

T

µ

=

ω

k

Substitute the values in the above equation.
√

T

0.01

=

60π

2π 3

√

T

0.01

=90
T=902×0.01
T=81N