A simple pendulum takes 15 seconds to complete 5 oscillations. What is the time period of a pendulum? How many oscillatilns will it complete in a minute?
Answers
therefore , in 1 second, oscillations = 5/15 =
1/3
Therefore, in 60 seconds , no. of oscillations = 1/3×60 = 20
Given:
The time which is taken to complete 5 oscillations=15 seconds
To find:
Period of a pendulum
Number of oscillations completed in a minute
Solution:
We can find the solutions by following the steps given below-
We know that the time taken by a pendulum for one oscillation can be obtained by dividing the total time taken and the number of oscillations in that time.
The pendulum takes 15 seconds for 5 oscillations.
So, for one oscillation, it will take 15/5 seconds
The period of one oscillation of pendulum=15/5
= 3 seconds
The number of seconds in one minute=60
The pendulum takes 3 seconds for one oscillation, so the number of oscillations in 60 seconds will be 60/3.
The number of oscillations in 1 minute=60/3
= 20 oscillations
Therefore, the time period of a pendulum is 3 seconds and it completes 20 oscillations in a minute.