Rearranging period of pendulum equation to find length

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SUMMARY

The equation for the period of a pendulum, T = 2π√(l/g), can be rearranged to solve for length (l) as l = (T^2 * g) / (4π^2). The discussion highlights the importance of squaring both sides of the equation correctly, including the constant factor of 2π. Participants emphasized that neglecting to square the entire factor leads to incorrect results. This rearrangement is crucial for accurately determining the length of the pendulum based on its period and gravitational acceleration.

PREREQUISITES
  • Understanding of basic algebraic manipulation
  • Familiarity with the concepts of pendulum motion
  • Knowledge of gravitational acceleration (g)
  • Ability to work with square roots and squares in equations
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  • Study the derivation of the pendulum period formula
  • Learn about the effects of gravitational acceleration on pendulum motion
  • Explore advanced topics in harmonic motion
  • Practice solving similar equations involving square roots and fractions
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Students studying physics, particularly those focusing on mechanics and pendulum dynamics, as well as educators looking for clear examples of algebraic manipulation in physical equations.

Adam17
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Homework Statement

What is
T=2pi[(sqrt)l/g] rearranged for l= ?



Homework Equations





The Attempt at a Solution


Ive tried a few but I just don't know how to do this with sqrt's of a fraction involved.
 
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Eliminate the square root by squaring both sides.
 
Ok,so what I end up with after that is l=T^2g/2pi. Which is wrong as its not giving me the correct answer.
 
When you square both sides, don't forget that you also have to square the factor of 2\pi
 

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