Question

A pendulum completes 120oscillations in 0.5 minutes .What is its frequency .

Answer 1

Answer:

Given

Number of Oscillations, N=40

Time t=1min

Frequency f=

t

N

=

60

40

=0.667Hz

Time period,T=

f

1

=1.5sec

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

Explanation:

hope it works.........

Answer 2

Answer:

Explanation:

frequency = 120 / 0.5 * 60

                = 120 / 30

                 = 4 Hz