Question

A simple pendulum completes 400 oscillations in 5 minutes. Calculate its frequency the time period?​

Answer 1

Answer:

Given

Number of Oscillations, N=40

Time t=1min

Frequency f=tN=6040=0.667Hz

Time period,T=f1=1.5sec

Hence, frequency is 0.667Hz and time period is 1.5sec

Answer 2

Answer: oscillation=40

time taken=60

in 1 sec = 40/60=2/3 Hz  

frequency = 1/time period

time period = 1/frequency

time period = 1/2/3 =3/2 =1.5 sec