# An Investigation of the Factors Affecting the Period of a Pendulum

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An Investigation of the Factors Affecting the Period of a Pendulum I could investigate the following factors: * Angle of displacement * Length of string * Pendulum weight I am going to investigate and see if varying the length of string will affect the period of the pendulum. My prediction is: The longer the string the longer the period. The period will be longer as the pendulum has farther to travel. My theory is demonstrated below. Pendulum A has a shorter string. This gives it a shorter period. Pendulum B has a longer string and has a much larger period as it has farther to travel to get from X to Y to X which is one period. [IMAGE] I made my prediction based on a previous experiment I have done. The length affected the period as stated above and I think this will happen again in this experiment. I looked at a clock with a pendulum to see how it worked. I found that to change the speed of a second you adjust the length of the pole which the pendulum hangs from, so I also based my prediction on that as it is the same principle. I set up a trial experiment to test out the following: * Which angle of displacement to use (e.g. 90°) * How many readings to take * Which lengths of string to measure (e.g. every 10cm) * Where to carry out the experiment (on a desk/floor etc..) To ensure the test is fair I am going to: * Use the same piece of string * Use the same weight pendulum (preferably the exact same pendulum) * Make sure the string is measured accurately To ensure the test is safe I am going to: * Use a sensible angle of displacement * Not to swing the pendulum near others To ensure the test is accurate I am going to: