Question

Pendulum makes 12 complete swings in 8 seconds, what are its frequency and period on earth

Answer 1

Hi there!

We can begin by finding the period of the pendulum.

$T = \text{ # of complete swings / seconds} = 12 / 8 = \boxed{\text{1.5 sec}}$

The frequency is simply the reciprocal of the period, so:

$f = \frac{1}{T} = \frac{1}{1.5} = \frac{2}{3}Hz \text{ or } \boxed{0.67 Hz}$