The oscillation period of the pendulum is 2 s. How many oscillations will the pendulum make in 4 minutes?

The period of oscillation of the pendulum is time. for which the pendulum makes one complete swing. Thus, a given pendulum makes one oscillation in 2 seconds (T = 2 s).

Let’s translate 4 minutes into seconds: 4 minutes = 4 * 60 s = 240 s. Then, in t = 240 seconds, the pendulum will perform the number of oscillations equal to

N = t / T;

N = 240/2 = 120.