Question

A simple pendulum completes 120 oscillation in one minute. Calculate frequency in Hz.

Answer 1

Answer:

Hence, the frequency of the pendulum is 2 Hz.

Explanation:

Given,

Oscillation of pendulum = 120

Time taken = 1 min = 60 sec

Then,

Frequency = Oscillation / Time = 120 / 60 = 2 Hz

Hence, the frequency of the pendulum is 2 Hz.

Answer 2

Given:

Number of oscillations, n = 120.

Time taken, t = 1 minute = 60 seconds.

To Find:

We have to find the frequency (Hz) of a simple pendulum, that completes 120 oscillation in one minute.

The frequency of a pendulum is defined as the number of oscillations of the pendulum per second.

Solution:

The equation for finding frequency in Hertz is:

Frequency = $\frac{Number of oscillations}{Time taken} = \frac{n}{t} .$

Substituting the values for n and t in above equation, we get,

Frequency = $\frac{120}{60} = 2Hz.$

Hence, the frequency (Hz) of a simple pendulum, that completes 120 oscillation in one minute is 2Hz.

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