![]() Frequencyįor example, the length of a pendulum that would have a frequency of 1 Hz (1 cycle per second) is about 0.25 meters. You can find the length of the rod or wire for a given frequency or period. The frequency of a pendulum is how many back-and-forth swings there are in a second, measured in hertz.įrequency f is the reciprocal of the period T: T = 2.837 seconds or rounding off a little to T = 2.8 s.
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