The formula T = 2 pi StartRoot StartFraction L Over 32 EndFraction EndRoot relates the time, T, in seconds for a pendulum with the length, L, in feet, to make one full swing back and forth. What is the length of a pendulum that makes one full swing in 2.2 seconds? Use 3.14 for Pi.

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Lanuel

The length of this pendulum that makes one full swing is 3.93 meters.

Given the following data:

  • Time = 2.2 seconds.
  • [tex]\pi = 3.14[/tex]

To determine the length of this pendulum that makes one full swing:

How to calculate the length.

Mathematically, the time taken by this pendulum is given by this formula:

[tex]T=2\pi \sqrt{\frac{L}{32} }[/tex]

Making L the subject of formula, we have:

[tex]T^2 = 4\pi ^2 \frac{L}{32} \\\\32T^2 =4\pi ^2L\\\\L=\frac{32T^2}{4\pi ^2}[/tex]

Substituting the given parameters into the formula, we have;

[tex]L=\frac{32 \times 2.2^2}{4 \times (3.14)^2 } \\\\L=\frac{32 \times 4.84}{4 \times 9.8596 }\\\\L=\frac{154.88}{39.4384}[/tex]

L = 3.93 meters.

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Answer:

4

Step-by-step explanation: