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Question
The length of the two pendulum are 110 cm and 27.5 cm. Calculate the ratio of their time periods.
Numerical
Solution
l1 = 110 cm; l2 = 27.5 cm
Let T1 and T2 be the time period of two pendulums.
`"T"_1/"T"_2=sqrt("l"_1/"l"_2)`
`"T"_1/"T"_2=sqrt(110/27.5)=sqrt(4/1)`
`"T"_1/"T"_2=2/1`
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