Question

A swinging pendulum completes 25 oscillations in 8s,

what is the frequency of vibration?

Answer 1

Answer:

3.125 Hz.

Explanation:

Frequency is defined as the number of observations per sec / min / hr.

In these cases frequency is defined by per sec.

     Here,

      We are talking about pendulum and its oscillations, therefore, frequency shall be defined by the oscillations per sec.

⇒ Number of oscillations in 8 s = 25

⇒ Number of oscillations in 1 s = 25 / 8

⇒ Frequency = 3.125 Hz