A pendulum completes 20 oscillations in 40 seconds. What is its frequency?
Show Hint
- 0.5 Hz
- 2 Hz
- 20 Hz
- 40 Hz
The Correct Option is A
Solution and Explanation
Frequency (\( f \)) is defined as the number of complete oscillations per unit time: \[ f = \frac{n}{t} \] where:
\( n = 20 \) oscillations,
\( t = 40 \) seconds.
Step 2: Substitute values. \[ f = \frac{20}{40} = 0.5 \, \text{Hz} \] Hence, the frequency of the pendulum is 0.5 Hz.
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