Question

A simple pendulum makes 10 oscillations in 20 seconds. What is the time period and frequency of its oscillation?
[2 marks]

Answer 1

A pendulum makes 10 oscillations in 20 seconds.
So, it makes 1 oscillation in $\frac{20}{10}=2sec$

Hence, the time period = 2 sec
[1 mark]

We know,
$Frequency=\frac{1}{T}=\frac{1}{2}=0.5Hz$

[1 mark]
Therefore, the time period and frequency of its oscillation are 2 sec and 0.5 hertz respectively.