Question

A pendulum oscillates 40 times in 4sec find its time period and frequency .

Answer 1

T= 0.1 sec

frequency = 10

Answer 2

Given : A pendulum oscillates 40 times in 4 seconds.

　

To find : What is its time period and frequency?

　

Using formula :

1) Frequency = Number of times the pendulum oscillates/Total number of time taken.

　

2) Time period = Number of oscillation per second/Frequency.

　

Calculations :

→ Frequency = 40/4

→ Frequency = 10 hertz

　

→ Time period = 1/10

→ Time period = 0.1 seconds

　

Therefore,

1. Frequency = 10 hertz.
2. Time period = 0.1 seconds.