1)The equation of transverse wave on a string is y=0.12sin(20x-
a) wave speed = w/k = 5/20 = 0.25 m/s
b) wave speed = sqrt ( tension / linear density)
0.25 = sqrt (16.2/linear density)
linear density = 259.2 Kg/m
2)
y(15cm,t) = 10cm sin(2.5-8t)
(a) we have kx = 2.5
so, k*0.5 = 2.5
k = 5
What is the speed of the wave traveling along the string = w/k = 8/5 = 1.6 m/s is the answer
b) maximum speed of the paper
dy/dt = (0.1*-8) sin(2.5-8t) = -(0.8) sin(2.5-8t)
so, maximum speed of the paper = 0.8 m/s is the answer
1.a) Since angular velocity=20rad./s
so, frequency=angular velocity/2
so, f=3.184
and
so, velocity
1.b) since, where T=Tension, m=mass, L=length
mass per unit length=1.0125kg/m
2.a) from 1.a velocity v=.3125m/s
2.b) differenciate y with repect to time and it's maximum value will be maximum velocity of paper=80cm/s.
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