Physics Lab 2 Ballistic Pendulum skeptic part

Physics Lab 2 Ballistic Pendulum skeptic part - Discussion...

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Discussion and Analysis There are many uncertainties in this experiment that need to be accounted for. Some of the more obvious ones are the pendulum length, the mass of the pendulum and ball, and the velocities associated with the photogate. The pendulum length and mass and the mass of the steel ball are both random uncertainty. The scale and measuring stick can only be so accurate, and if these numbers are not exact than it in turn affects the velocities later on in the experiment. To find the velocities in this experiment we used two different methods: the photogate and pendulum. Then we calculated the percent differences for the different methods. They’re similar but we still need to account for the difference. Some possible reasons for this difference could be the uncertainty in the diameter of the steel ball and measuring the length of the pendulum. Also it is difficult to know whether the photogate is calibrated to reduce any, if it all, errors. When you rely on an electronic machine to
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This note was uploaded on 07/27/2008 for the course PHY 211 taught by Professor Mcadams during the Spring '08 term at Kentucky.

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Physics Lab 2 Ballistic Pendulum skeptic part - Discussion...

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