Question

A simple pendulum takes 51s to complete 30 oscillations. find the time period of the pendulum by the formula?

Answer 1

Calculate the period of oscillations according to the formula above: T = 2π√(L/g) = 2π * √(2/9.80665) = 2.837 s . Find the frequency as the reciprocal of the period: f = 1/T = 0.352 Hz . You can also let this simple pendulum calculator perform all calculations for you

By this formula you can solve your question