Question

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

Answer 1

Answer:

The time period taken by the pendulum is 2 seconds.

Answer 2

Frequency  = no. of oscillations/time taken
                     = 20/40
                     = 1/2 oscillations per second(0.5 Hz)

Time Period = time taken/no. of oscillations
                     = 40/20
                     = a complete oscillation takes 2 second