Question

A pendulum oscillates 80 times in 5 seconds. Find its time period and frequency.

Answer 1

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Given : A pendulum oscillates 80 times in 5 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 = 80/5

Frequency = 16 hertz

Time period = 1/16

Time period = 0.0625 seconds

Therefore,

1. Frequency = 16 hertz.

2. Time period = 0.0625 seconds.

Answer 2

Explanation:

Oscillations of a pendulum are 80 times in 5 seconds.

Frequency=No. of waves produced in a second.

Time Period= The time taken to produce one wave.

Frequency=1/Time Period.

Answer: Frequency=80/5=16Hz

              Time Period=1/16