How Do I Calculate the Time Constant from Oscillation Decay?

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SUMMARY

The discussion centers on calculating the time constant from the decay of oscillation amplitude in a flagpole subjected to a gust of wind. The amplitude decreases to 25% of its initial value after 10 seconds, leading to the conclusion that the time constant, denoted as τ, is 7.2 seconds. The relevant equation used is xmax(t) = Ae-t/τ, which describes the exponential decay of the oscillation amplitude over time.

PREREQUISITES
  • Understanding of exponential decay functions
  • Familiarity with the equation of motion for oscillating systems
  • Basic knowledge of time constants in physics
  • Ability to manipulate algebraic equations
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  • Study the derivation of the exponential decay formula in oscillating systems
  • Learn about the significance of time constants in various physical systems
  • Explore applications of oscillation decay in engineering and physics
  • Investigate the effects of damping on oscillatory motion
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Students studying physics, particularly those focusing on mechanics and oscillations, as well as educators looking for practical examples of time constant calculations.

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Homework Statement



A gust of wind hits a flagpole and starts it oscillating. After 10 s, the amplitude of its motion has decreased to 25% of its initial value.

What is the value of the time constant?

Homework Equations



xmax(t) = Ae-t/\tau



The Attempt at a Solution



I know that the answer is 7.2s, but how do I find it?

How do I manipulate the above equation?
 
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Use the equation you gave at with t=0 and also with t=10
 

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