The frequency of the spring = 5 Hz
Explanation:The period = 0.2 seconds
The relationship between frequency and period is:
[tex]\text{Frequency = }\frac{1}{\text{Period}}[/tex]Therefore:
[tex]\begin{gathered} \text{Frequency}=\frac{1}{0.2} \\ \text{Frequency=5 Hertz} \end{gathered}[/tex]The frequency of the spring = 5 Hz