Question

A pendulum completes 30 oscillations in 1 minute. What is it's time period?

Answer 1

Answer: 2

Explanation: no of oscillation - 30

Total time taken - 1 min or 60 secs

Time period - 60/30- 2/1- 2

Answer 2

Answer:

The time period is 2 seconds.

Explanation:

Periodic motion is when an object repeats it's movements in a fixed intervals of time.

i.e.

• Oscillation of a simple pendulum.
• Movement of a rocking chair.

Oscillatory motion is when an object repeatedly moves to and fro from it's mean position. It is a type of periodic motion.

The time taken (in unit seconds) for the pendulum to complete 1 complete oscillation is called the time period of the Oscillatory motion of the pendulum.

$time \: period = \frac{total \: time \: taken(s)}{total \: number \: of \: oscillations }$

$time \: period = \frac{60s}{30}$

$time \: period = 2s$

Therefore the time period of the pendulum is 2 seconds.