Question

- A simple pendulum complete 120
oscillations in 1 min. What is its
time period​

Answer 1

Given :

➳ A simple pendulum completes 120 oscillations in 1min.

To Find :

⟶ Time period of simple pendulum.

SoluTion :

➠ Time requires to complete an oscillation is called time period.

➠ In other words, Time period is defined as the ratio of total time to the total no. of oscillations.

➠ SI unit : s

Mathematically,

$\bigstar\:\underline{\boxed{\bf{\gray{Time\:period=\dfrac{Total\:time}{No.\:of\:oscillations}}}}}$

✪ Conversion :-

➾ 1 min = 60 seconds

⇒ T = t / n

⇒ T = 60 /120

⇒ T = 1/2

⇒ T = 0.5 s

Answer 2

Given ,

A simple pendulum complete 120 oscillations in 1 min

We know that ,

Time period is defined as the time taken to complete one oscillation

$\boxed{ \sf{Time \: period = \frac{ Time \: taken }{Number \: of \: oscillation} }}$

Thus ,

Time period = 60/120

Time period = 1/2

Time period = 0.5 sec

Therefore ,

• The time period of simple pendulum is 0.5 sec