Related Resources: calculators Tuning Fork Formulae and Calculator The frequncy of electrically maintained tuning fork at transverse mode of vibration =. The frequncy of electrically maintained tuning fork at longitudianal mode of vibration =. Μ - linear density in kg/m - mass of the string / length of the string. Here, M is the total mass- mass of the scale pan + mass suspended. The experiment is performed exactly as in the previous case. In this case, when the tuning is vibrated parallel to the length of the string. The apparatus is arranged with length of the string is perpendicular to the prong of the fork. Longitudinal mode of vibration of the string Using equation, frequency of the tuning fork is calculated. Keeping two long knitting needle at two nodes, length of N loops is measured and average length is calculated. The length of the string is so adjusted to get well defined loops. The string vibrates transversely producing stationary waves. The circuit is closed and tuning fork is set into vibration. The scale pan is again suspended at the end of the string and mass is added in the scale pan. The scale pan is detached from the string and its mass and length is determined using common balance and meterscale. When the tuning fork is excited, it vibrates perpendicular to the length of the string. The other end of the string carrying a scale pan is passed over a pulley fixed at one end of the table. The apparatus is arranged with the length of the string is parallel to the prong of the tuning fork on which one end of the string is attached. Transverse mode of vibration of the string Repeat the experiment by changing the parameters. Using equations for mode of vibration, calculate the frequency of particular tuning fork.ĩ. Length l for one loop is measured by adjusting the scale position.Ĩ. Power on the button and loops will be formed.ħ. The transformer voltage is adjusted to 8V.Ħ. Choose the environment for doing the experiment.Ĥ. Select a particular tuning fork to carry out the experiment.ģ. Show Result - This helps you to check the result of the experiment with manual calculation.Ģ. Reset- One can repeat the whole experiment by using this button. Pointer movement- The pointer can be moved by using the arrow keys on either side of the zoomed part of the loop image in the simulator. Power On - This is used to start the experiment. Scale Position- This is used to change the position of the meter scale and one can calculate the length of one loop. Transformer Voltage- This is used to change the voltage of the step down transformer. Mass in the pan M' - This slider is used for adding mass in the scale pan. Select Environment- This is used to select the environment to carry out the experiment. One can choose any one of the tuning forks to carry out the experiment. Selecting Tuning fork - There are five tuning forks with different frequencies. Transverse mode - In this arrangement the vibration of the prongs of the tuning fork are in the direction perpendicular to the length of the string. Longitudinal mode- In this arrangement the tuning fork is set in such a manner that the vibrations of the prongs are parallel to the length of the string.
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