Question

The period of a pendulum is 0.20 seconds. What is the frequency of the pendulum?

• A. $0.20Hz$
• B. $10.0Hz$
• C. $20.0Hz$
• D. $5.0Hz$
• E. The frequency cannot be determined without knowing the length of the pendulum

Answer 1

The correct option is D $5.0Hz$

Time period of pendulum $T=0.20$ s

Thus frequency of pendulum $f=\frac{1}{T}=\frac{1}{0.20}=5$ Hz