A pendulum has a frequency of 0.80 Hz, calculate the periodic time of the pendulum.
You need to use the equation that relates frequency and period; period = 1/frequency
Then all you need to do is plug in the frequency to get the periodic time:
period = 1/0.80 Hz = 1.25 s
[NOTE: If you're confused as to how you get the unit of s from Hz, remember that another way of writing the unit Hz is s-1, so when you divide by s-1 it becomes just s.]
