Question

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

Answer 1

Answer:

2.1 seconds

Explanation:

Time taken to complete=20

Oscillations=42s

Time taken to complete=1

Oscillation=42/20s=2.1s

Time period of a pendulum is time

taken by it to complete 1 oscillation.

Time period of pendulum is 2.1 seconds.

Answer 2

Answer:

2.1 secs

Explanation:

TIME PERIOD = Time taken / No of Oscillations

                time taken =42 sec

          No of oscillations = 20

                                                             =42/20

                                                                    = 2.1 sec

hope it will help you