Question

A pendulum oscillates 120 times in 6 seconds. Find its time period and frequency.A pendulum oscillates 120 times in 6 seconds. Find its time period and frequency.

Answer 1

Answer:

The pendulum oscillates 60 times in 6 secs.

so taken taken to oscillate once =6/60 secs =0.1 secs

so time period of the pendulum is 0.1 secs.

Frequency =1/timeperiod=1/0.1Hz =10 Hz

We get, 10Hz.

Explanation:

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Answer 2

Given:

Pendulum oscillates 120 times in 6 seconds.

To Find:

a) Time period

b) Frequency

Solution:

Time period is the time taken for one oscillation.

The pendulum takes 6 seconds for 120 oscillations.

a) Therefore, the time taken for one oscillation,

T = 6/120

T = 1/20

T = 0.05 s.

b) Frequency = 1 / Time period

n = 20 / 1

n = 20 Hz

Therefore, the Time period is 0.05 seconds and the Frequency is 20 Hz.