Damped oscillations - Finding damping coefficient

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SUMMARY

The discussion focuses on calculating the damping coefficient \( b \) for a damped oscillation scenario involving a 50.0g hard-boiled egg attached to a spring with a force constant \( k = 25.0 \, \text{N/m} \). The egg is released with an initial amplitude of 0.300m, which decreases to 0.100m after 5.00 seconds. The relationship governing the amplitude over time is defined by the equation \( \text{Amplitude} = A e^{-bt/2m} \). By applying this equation, the damping coefficient can be determined using the provided values.

PREREQUISITES
  • Understanding of damped harmonic motion
  • Familiarity with the equation of motion for damped oscillations
  • Basic knowledge of spring constants and mass
  • Ability to manipulate exponential decay equations
NEXT STEPS
  • Calculate the damping coefficient \( b \) using the formula \( b = -\frac{2m}{t} \ln\left(\frac{\text{Amplitude final}}{\text{Amplitude initial}}\right) \)
  • Explore the effects of varying the mass and spring constant on damping
  • Investigate real-world applications of damped oscillations in engineering
  • Learn about the differences between underdamped, critically damped, and overdamped systems
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and oscillations, as well as educators seeking to explain the concept of damping in harmonic motion.

diffusion
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Homework Statement


A 50.0g hard-boiled egg moves on the end of a spring with force constant k = 25.0 N/m. It is released with an amplitude 0.300m. A damping force Fx = -bv acts on the egg. After it oscillates for 5.00s, the amplitude of the motion has decreased to 0.100m.
Calculate the magnitude of the damping coefficient b.

Homework Equations


render?tex=x+%3D+Ae%5E%7B-bt%2F2m%7D%5Ccos%7B%28%5Comega+%27t%2B%5Cphi+%29%7D.gif



The Attempt at a Solution


I honestly have no idea how to approach this question. Could someone steer me in the right direction?
 
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Anyone?
 
diffusion said:

Homework Equations


render?tex=x+%3D+Ae%5E%7B-bt%2F2m%7D%5Ccos%7B%28%5Comega+%27t%2B%5Cphi+%29%7D.gif

Note that the amplitude, at time t, is given by


Amplitude = A e-bt/2m
 

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