The effect of mass, angle and length of string on the period of a pendulum |
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Kyle Butler |
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The effect of mass, angle and length of string on the period of a pendulum
The purpose of this lab was to prove the theoretical equation of a pendulum is T=2π(√L/g)and determine if any other factors affect the period of a pendulum. Our hypothesis was that an increase in mass would decrease the period, an increase in angle increase the period and an increase in length of string would increase the period. would a The materials that are needed for this experiment include a photo gate, stand, 10 bobs varying in weight, a role of string, scissors, tape, computer with program for photo gate, protractor, large chart paper, scale, a pencil and a piece of paper. The results produced data with only 6.85% error, we reduced error by using a photo gate and by attempting 3 trials for each set of identical variables and then averaged the results. After the experiment we determined that the period is independent from the mass, that angle may be weakly correlated and that further testing should be done to confirm this point. We also concluded that period is proportional to the square root of length.
A pendulum is a mass which is suspended by either a rod or string and has one end which is fixed and another that hangs free. The pendulum can be swung back and forth, the time it takes for the pendulum to complete one cycle is called the period. The theoretical equation of a pendulum is T=2π(√L/g). The invention of the pendulum is attributed to Galileo in 1602 (Kurtus). Although the equation does not include any variables other than length... [continues]
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