Question

pendulum takes 25 seconds to complete 20 oscillation what is the time period of the pendulum

Answer 1

Answer: Time period is the time taken to complete one oscillation.

In 25 seconds , pendulum oscillates 20 times.

Time period = 20/25= 0.2 s

Hence time period of the pendulum is 0.2 seconds.

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Answer 2

The time period of the pendulum is 0.8sec.

Given:

The pendulum takes 25 seconds to complete 20 oscillations.

To Find:

The time period of oscillation.

Solution:

To find the time period of oscillation, we will follow the following steps:

As we know,

According to the question:

Time is taken to complete 20 oscillations = 25 seconds.

Also,

The time period is the time taken to complete one oscillation i. e one complete motion of the pendulum from its equilibrium position and back to its original position.

Now,

$25 \: oscillation = 20$

$1 \: oscillation = \frac{20}{25} = \frac{4}{5} sec = 0.8sec$

Henceforth, the time period of the pendulum is 0.8sec.

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