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Unformatted text preview: m/s^2. The value for uncorrelated error was used because the time was dependent on the length of the string. Possible sources of error include human error with time start and stop period, degree of angle the ball was released from equilibrium, and deciding when the 25 th period was complete (maximum amplitude from the point of equilibrium). The uncertainty in human error with using the time was about 0.5 seconds. The degree of angle from which the ball was released could be important because the ball could have had more momentum to start out with and its peaks could have been higher, making the time longer than the other trials. Also, when deciding at what point to stop the counting clock varied among trials because it was hard to tell from looking at the ball from the right side of the pendulum. Even with these factors of errors, the relationship between periods, length, and the local gravitational constant....
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- Fall '10
- Simple Harmonic Motion, local gravitational acceleration, 0.5 seconds, Christine Instructor