Question

The bob of a pendulum oscillates 20 times in 10 sec. Find its frequency.

Answer 1

Answer:

The time period and frequency are 0.25 sec and 4 Hz.

Explanation:

Given that,

Number of oscillates n= 20

Time t = 5 sec

We need to calculate the time period

Using formula of time period



Where, t = time

n = number of oscillation

Put the value into the formula





We need to calculate the frequency

Using formula of frequency







Hence, The time period and frequency are 0.25 sec and 4 Hz.

Answer 2

Answer:

The bob of a pendulum oscillates 20 times in 10 sec. Find its frequency.

Answer:-

20/10

= 2