what will be the precautions in the experiment to determine if mass , angle, or length of a pendulum has any effect on its period.?
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A simple way to measure the pendulum's period fairly precisely is to start the pendulum swinging, and measure the time required for a large number of FULL swings - 40, 50, or so. Choose the number of swings so that the total time for the measurement is 40 seconds or more.
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