Question

A simple pendulum is known to have a period of oscillation, T = 1.55 s. Student A uses a digital stopwatch to measure the total time for 5 oscillations and calculates an average period T = 1.25 s. Student B uses an analog wristwatch and the same procedure to calculate an average period for the 5 oscillations and finds T = 1.6 s. What is the most probable source of error that could explain the difference in the results? The amplitude of oscillation may have been too large for one pendulum. [5%, 10%] Human reaction time in starting and stopping the timing devices [80%, 30%] Student A mistakenly measured 4 oscillations instead of the intended 5. [5%, 20%]

          A simple pendulum is known to have a period of oscillation, T = 1.55 s. Student A uses a digital stopwatch to measure the total time for 5 oscillations and calculates an average period T = 1.25 s. Student B uses an analog wristwatch and the same procedure to calculate an average period for the 5 oscillations and finds T = 1.6 s. What is the most probable source of error that could explain the difference in the results?
The amplitude of oscillation may have been too large for one pendulum. [5%, 10%]
Human reaction time in starting and stopping the timing devices [80%, 30%]
Student A mistakenly measured 4 oscillations instead of the intended 5. [5%, 20%]

a simple pendulum is known to have a period of oscillation t 155 s student a uses a digital stopwatch to measure the total time for 5 oscillations and calculates an average period t 125 s st 54168

Added by Melissa J.

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