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A string that is under 45.0 N of tension has linear density 5.50 g/m . A sinusoidal wave with amplitude 3.50 cm and wavelength 1.50 m travels along the string. What is the maximum velocity of a particle on the string?

Answer :

Answer:

Maximum velocity of a particle on the string is 1.32 m/s

Explanation:

The speed of the wave in string is

[tex]v=\sqrt{\frac{T}{\mu} }[/tex]

where T= 45 N is tension in the string , [tex]\mu=5.5 g/m[/tex] is the linear mass density

[tex]v=\sqrt{\frac{45}{5.5\times 10^{-3}} }\\v=90.45 m/s[/tex]

Maximum velocity for sinusoidal wave is

[tex]V_{max}=A\omega[/tex] where A is the amplitude,

[tex]\omega=2\pi f\\\omega=2\pi \frac{V}{\lambda} \\\omega=2\pi \frac{90.45}{1.5}\\\omega=378.9 rad[/tex]

now

[tex]V_{max}=A\omega\\V_{max}=3.5 \times 10^{-2} \times 378.9\\V_{max}=1.32 m/s[/tex]

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