Question

a pendulum osccilates 20 time in 4 second find its time period and frequency ​

Answer 1

Answer:

No. of oscillation=20

Time taken=4

So,

    Time period=$\frac{No. of oscillation}{Time taken}$

                        =$\frac{20}{4}$

                        =5s

Now,

       Frequency=$\frac{1}{T}$

              or

              f=$\frac{1}{T}$

              f=$\frac{1}{5}$

              f=0.2Hz

Explanation:

Hope it helps you friend ❤️