A string that is under 54.0 N of tension has linear density 5.20 g/m . A sinusoidal wave with amplitude 2.50 cm and wavelength 1.80 m travels along the string.What is the maximum velocity of a particle on the string?

Respuesta :

Answer:

8.89288275 m/s

Explanation:

F = Tension = 54 N

[tex]\mu[/tex] = Linear density of string = 5.2 g/m

A = Amplitude = 2.5 cm

Wave velocity is given by

[tex]v=\sqrt{\frac{F}{\mu}}\\\Rightarrow v=\sqrt{\frac{54}{5.2\times 10^{-3}}}\\\Rightarrow v=101.90493\ m/s[/tex]

Frequency is given by

[tex]f=\frac{v}{\lambda}\\\Rightarrow f=\frac{101.90493}{1.8}\\\Rightarrow f=56.61385\ Hz[/tex]

Angular frequency is given by

[tex]\omega=2\pi f\\\Rightarrow \omega=2\pi 56.61385\\\Rightarrow \omega=355.71531\ rad/s[/tex]

Maximum velocity of a particle is given by

[tex]v_m=A\omega\\\Rightarrow v_m=0.025\times 355.71531\\\Rightarrow v_m=8.89288275\ m/s[/tex]

The maximum velocity of a particle on the string is 8.89288275 m/s