Question

A pendulum completes 20 oscillation in 38 s.What is its time period?
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Answer 1

Answer:

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Explanation:

20 oscillations in 30 seconds

1 oscillation in 30/20 = 1.5 seconds

1.5 = 4t

t = 1.5/4 = 0.375 s

It takes 0.375 seconds to move from an extreme position to mean position

Answer 2

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