Question

A pendulum oscillates 50 times in 10 seconds. Find it’s time period and frequency.

Answer 1

Answer:

FREQUENCY=5Hz and TIME PERIOD=0.2sec

Explanation:

frequency(f)=number of times pendulum oscillates/total time taken (T)=50/10s^-1=5s^-1 or 5Hz(as Hz is S.I.unit of frequency)

time period(t) is inverse of frequency(f) i.e.t=1/f and therefore t=1/5=0.2sec

Answer 2

Given : A pendulum oscillates 50 times in 10 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 = 50/10

→ Frequency = 5 hertz

　

→ Time period = 1/5

→ Time period = 0.2 seconds

　

Therefore,

1. Frequency = 5 hertz.
2. Time period = 0.2 seconds.