For this case we have that the fan spin period is given by:
[tex]T = \frac {C} {t}[/tex]
Where:
C: It is the number of cycles
t: It's time
According to the data of the statement we have:
[tex]T = \frac {4} {3}\\T = 1.33 \frac {1} {s}[/tex]
Thus, the fan spin period is[tex]1.33 \frac {1} {s}[/tex]
Answer:
Fan spin period is [tex]1.33 \frac {1} {s}[/tex]
