The oscillation period of the pendulum is 0.5 s. How many complete oscillations will the pendulum make in 3 s?

Given:
T = 0.5 seconds – period of oscillation of the pendulum;
t = 3 seconds – time span.
It is required to determine n – how many complete oscillations the pendulum will make during the time interval t.
The period of oscillation characterizes the time of one complete oscillation of the body. Then, to determine the number of oscillations, you must use the following formula:
n = t / T = 3 / 0.5 = 30/5 = 6 oscillations.
Answer: in 3 seconds the pendulum will make 6 complete oscillations.