Question

Calculate Time-period of a simple pendulum if it takes 72 seconds to complete 24 oscillations.

Answer 1

Answer:

3 s

Explanation:

Total time = 72 s

No. of oscillations = 24

Therefore time period = 72 ÷ 24 = 3 s (Ans.)

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Answer 2

Answer:

To begin with, let us first consider the number of oscillations and that in a given time.

Frequency = No. of oscillations / Time taken to complete that much.

Frequency = 24 / 72

Frequency = 0.333 Hertz.

Time period = Reciprocal of Frequency

Time period = 1 / 0.333

Therefore, Time period of this Simple pendulum ≈ 3 s.

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