Question

A simple pendulum takes 30 sec to complete 15 oscillations . What will be the time period of pendulum?

Answer 1

Answer:

2 seconds

Explanation:

time taken to complete

15 oscillation=30 sec

time taken to complete

1 oscillation=30÷15

=2secondes

Answer 2

Answer:

A simple pendulum takes 30 sec to complete 15 oscillations. The time period of the pendulum will be $2\ s$

Explanation:

• The time period is the time taken to complete one to and fro motion of the oscillating body.

• It can be obtained from the ratio of time taken for the oscillations and the number of oscillations made by the pendulum.

•         $T = \frac{t}{N}$      ....(1)

• Where T is the time period N  is the number of oscillations  and t is the time taken for the oscillations

In the question, it is given that,

$t=30\ s$

$N =1 5$

Substitute these values into equation(1)

$T = \frac{30}{15} = 2\ s$

• Time period of the pendulum = $2\ s$