Question

A simple pendulum takes 42 seconds to complete 20 oscillations. What is its time period?

Answer 1

Answer:

yes the correct answer is 2.1s

Answer 2

Given :

Time taken to complete 20 oscillations = 42 seconds

To Find :

Time period of oscillation

Solution :

The time period of oscillation is defined as the time taken by the simple pendulum to complete one oscillation.

We are required to find the time period of a pendulum which takes 42 seconds to complete 20 oscillation.

Time taken to complete 20 oscillations = 42 seconds

Time taken to complete 1 oscillation = $\frac{42}{20}$ seconds

                                                            =  2.1 seconds

Therefore, the Time Period of oscillation of simple pendulum is found to be 2.1 seconds.