The period of a simple pendulum of length 80.0cm was found to have doubled when...

WAEC 2009

The period of a simple pendulum of length 80.0cm was found to have doubled when the length of the pendulum was increased by X. Calculate X.

A. 26.7cm
B. 40.0cm
C. 160.0cm
D. 240.0cm

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Correct Answer: Option D

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The period of a simple pendulum of length 80.0cm was found to have doubled when...

Correct Answer: Option D

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