Question

The time of 20 vibrations of a simple pendulum recorded by stopwatch accurate upto 1/10 of a second is 38.8. The time period is given by:​

Answer 1

Explanation:

20 vibration in 3.88 second

frequency=number of vibrations/ time

or ,time =number of vibrations/frequency

or,time=20÷5.15

or,time =3.88

The time period is3.88 s