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If the length of simple pendulum is tripled, what will be its new time period in terms of original period T?

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If the length of simple pendulum is tripled, what will be its new time period in terms of original period T?

(a) 0.7T

(b) 1.73T

(c) T/2

(d) T

I had been asked this question in exam.

The above asked question is from Harmonic Motion in section Oscillations of Engineering Physics I

1 Answer

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Best answer
The correct answer is (b) 1.73T

Best explanation: T∝√l

T^‘∝√3l

T^‘=√3l=1.732T.

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