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March 13th, 2018, 04:07 AM   #1
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Simple pendulum problem

please explain step by step

Last edited by Marva; March 13th, 2018 at 04:10 AM.
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March 13th, 2018, 05:50 AM   #2
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Do you know the formula for the frequency/period of a pendulum?
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March 13th, 2018, 05:59 AM   #3
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As the pendulum's frequency is inversely proportional to the square root of its length,

L$_1$/L$_2$ = (f$_2$/f$_1$)² = 16.
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