SOLUTION: The period T (in seconds) of a pendulum can be modeled by (T= 1.11 multiplied by the square root of l) where l is the pendulum's length (in feet). A) How long is a pendulum with

Algebra ->  Square-cubic-other-roots -> SOLUTION: The period T (in seconds) of a pendulum can be modeled by (T= 1.11 multiplied by the square root of l) where l is the pendulum's length (in feet). A) How long is a pendulum with       Log On


   

Question 596213: The period T (in seconds) of a pendulum can be modeled by (T= 1.11 multiplied by the square root of l) where l is the pendulum's length (in feet).
A) How long is a pendulum with a period of 5 seconds?
B) What is the length of the pendulum with a time period of 1.4 seconds?

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The period T (in seconds) of a pendulum can be modeled by (T= 1.11 multiplied by the square root of l) where l is the pendulum's length (in feet).
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t+=+1.11%2Asqrt%28L%29
A) How long is a pendulum with a period of 5 seconds?
5+=+1.11%2Asqrt%28L%29
sqrt%28L%29+=+5%2F1.11
Square both sides.
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B) What is the length of the pendulum with a time period of 1.4 seconds?
Same as above.
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It's a formula, all you have to do is sub the number and solve for L.