Damped harmonic oscillator physics

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SUMMARY

The discussion centers on the calculation of power dissipated by the damping force in a driven damped harmonic oscillator. The differential equation governing this system differs from that of a normal harmonic oscillator due to the presence of a damping term, which causes the amplitude to decrease over time. The equation for the position of the oscillator is given by x(t) = A * exp(-αt) * sin(wt + φ), where α represents the damping coefficient. The average power loss can be calculated using the average of (sin(wt + φ))^2 over a cycle, which is one half.

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  • Understanding of differential equations related to oscillatory motion
  • Familiarity with the concepts of damping and driven oscillators
  • Knowledge of trigonometric identities and their applications in physics
  • Basic grasp of power calculations in mechanical systems
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  • Study the differential equation for damped harmonic oscillators in detail
  • Learn about the effects of different damping coefficients on oscillator behavior
  • Explore the concept of resonance in driven oscillators
  • Investigate energy conservation in oscillatory systems with damping
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brad sue
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Please I don't understand this problem at all:

Consider a driven damped harmonic oscillator.Calculate the power dissipated by the damping force?
calculate the average power loss, using the fact that the average of (sin(wt+phi) )^2 over a cycle is one half?


Please can I have some help for it?

B
 
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Well, what's the differential equation which describes a damped harmonic oscillator? How does this differ from the normal harmonic oscillator equation? What, physically, causes this difference?
 
dicerandom said:
Well, what's the differential equation which describes a damped harmonic oscillator? How does this differ from the normal harmonic oscillator equation? What, physically, causes this difference?
I know that x(t)= A*exp(alpha*t) *sin(wt+phi)
the diffierence come from the fact that the amplitude diminishes as t changes.
 

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