<PRE><B>Question 427749</B>
The amount of time it takes a period of a pendulum is the amount of time it takes to swing back and forth one time. 
The relationship between the length of the pendulum L in inches and the length of the period t in seconds can be approximated by L = 9.78t^2. 
Find the period of a pendulum whose length is 60 inches. Round to the nearest tenth of a second.
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L = 9.78t^2
60 = 9.78*t^2
6.135 = t^2
t = 2.48 seconds
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Cheers,
Stan H.
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