The setup of apparatus required to measure the frequency of the first harmonic at different values of length, tension, or mass per unit length
This method is an example of the procedure for varying the length of the string with the frequency – this is just one possible relationship that can be tested
Before conducting an experiment, a table must be set up to detail of what measurements are to be made
v = fλ = f × 2L
If the frequency is plotted again the inverse of the length, the velocity is twice the gradient of the graph
A student investigates the relationship between the frequency of the stationary waves on a wire and the tension in the wire. The tension is varied by adding masses to a hanger which is attached to a pulley over one end of a table.The student records the following data:
Calculate the frequency using the relation between frequency, length, tension and mass per unit length. Evaluate the percentage uncertainty in these values.