Question

calculate the frequency of a simple pendulum making 9000 oscillations in 1 minute and 30 seconds​

Answer 1

1 min 30 sec = 90 sec

Frequency= 1/t

= 9000/90

= 100 hertz

Explanation:

Answer:

Explanation:

Answer: The frequency of the pendulum is 100 hertz

Answer 2

Answer:

The frequency of a simple pendulum making 9000 oscillations in 1 minute and 30 seconds​ will be $100Hz$

Explanation:

• In the question, it is given that,

        Number of oscillations                   $=9000$

        Time is taken for the oscillations   $=1min \ 30s = 60+30s=90s$

• The number of oscillations completed per time is the frequency of oscillation. It can be expressed as,  

        $Frequency = \frac{No\ of\ oscillations}{time\ taken}$

• Let f be the frequency of oscillation and N be the number of oscillations completed in time t.

         So as per definition,

        $f = \frac{N}{t}$                            ...(1)

• Then using equation(1),

         Frequency = $\frac{9000}{90} =100 Hz$