The next experiment consists of a tuning fork mounted to the lab bench, which vi

Question

The next experiment consists of a tuning fork mounted to the lab bench, which vibrates a horizontal string that can be draped over a pulley and loaded with mass. The equation describing standing waves in a string under tension is where f is the linear frequency of oscillation, lambda is the wavelength of the vibrations, T is the tension in the string, and mu is the linear mass density of the string. Explain in detail how you would determine (using tools in the lab, and without using the formula): the wavelength of the vibrations

Explanation / Answer

We could apply a given Tension to the string and a given freq of vibration. We can easilty measure the velocity of the wave. Then we can use v=n*wavelength :) Another more practical way is that we set the tension so that 'n' (n is your choice,if string length is large, take n=3,4 or 5;else take n=1,2 or 3) loops standing wave. Then the length of string is given by l (l is known/can be measured) = n*wavelength/2 Hope you got it :)

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