Evans SPH 4U1

Physics Grade 12

Pendulum Experiment


This purpose of performing this experiment is to practice finding a proportionality relationship from the set of data. I intentionally do not give students too much direction to see how well they can logically figure out how to get the data, make the table of values, plot a graph (figure out which is the dependent variable to plot on the y axis), and then determine the proportionality constant and the equation.


For those students who have taken the time to look at this on the website, I will give you some hints......


Your table should have the length of the Pendulum, l, and the Period of the Pendulum, T, as data. For a 'good' set of experimental data you should not just have had one measurement of the period at each length. You should have taken at least 2 (preferably 3) and taken the average.


Remember the variable that you are changing is the independent variable and will be plotted on the x axis (i.e. think about whether you were changing the length or the period). The other variable is the dependent variable (it will be on the y axis) and its change is only a result of you changing the independent variable.


Think about the relationship we found by our magic unit trick . Knowing this you should be able to figure out what your proportionality constant should be. Remember g is just a constant, the acceleration due to gravity.


We'll discuss your answers on Monday. Have a good weekend :)