Question

A simple pendulum make 20oscillations in 40 seconds
What is the time period and frequency of its
oscillation
​

Answer 1

Answer:

Time Period = 2 seconds

Frequency = 0.5 Hz

Explanation:

Time Period : Time taken to complete one oscillation by the pendulum is called time period.

Time take to complete 20 oscillations by the pendulum = 40 seconds

Time take to complete 1 oscillation by the pendulum = $\frac{40}{20}$ seconds

Time take to complete 1 oscillation by the pendulum = 2 seconds

Therefore the Time Period of the pendulum is 2 seconds.

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Frequency :  It is the number of oscillations made by the body in one second.

Frequency = ($\frac{1}{Time \:Period}$)

                 = ($\frac{1}{2}$)

                 = 0.5 Hz

Therefore,

The frequency of the pendulum is 0.5 Hz.