17. a student pushes his sister on a swing. what is the frequency of oscillation of his sister on the swing…

17. a student pushes his sister on a swing. what is the frequency of oscillation of his sister on the swing if the student counts 90 complete swings in 300 seconds? 0.30 hz 1.5 hz 18 hz 33 hz clear all

17. a student pushes his sister on a swing. what is the frequency of oscillation of his sister on the swing if the student counts 90 complete swings in 300 seconds? 0.30 hz 1.5 hz 18 hz 33 hz clear all

Answer

Explanation:

Step1: Recall frequency formula

Frequency $f=\frac{n}{t}$, where $n$ is the number of oscillations and $t$ is the time taken.

Step2: Identify values

Here, $n = 90$ (number of complete swings) and $t=300$ s (time).

Step3: Calculate frequency

$f=\frac{90}{300}= 0.3$ Hz

Answer:

A. 0.30 Hz