Question

if a pendulum oscillates with a frequency of 20 hz find the time period of the pendulum

Answer 1

Answer:

t=1/f

t= 1/20

=0.05

Ans....

Answer 2

Answer:

If a pendulum oscillates with a frequency of 20 Hz, the time period of the pendulum will be $0.05s$

Explanation:

• For a pendulum, we have the expression for the time period as,

        $Time\ period = \frac{1}{frequency}$

        The number of oscillations completed by the pendulum 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, N be the number of oscillations completed in time t and T be the time period.

         So as per definition,

         $T = \frac{1}{f}$      ...(1)

• In the question, it is given that,

        $f =20Hz$

        Then using equation(1),

         T = $\frac{1}{20}= 0.05s$