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Determine the value of Q for each of the oscillators

  • #1

Homework Statement


http://dspace.jorum.ac.uk/xmlui/bitstream/handle/10949/1022/Items/T356_1_030i.jpg [Broken]

Taking measurements from Figure 1, determine the value of Q for each of the oscillators represented. Explain how you obtained your answer. I haven't made an attempt as answering this as i'm unsure where to start. Any suggestions would be appreciated.

Homework Equations



The rate at which the mass–spring system loses energy to its surroundings is referred
to as the Q-value for the oscillator. The Q-value is defined as:

Q= 2π (E \ ΔE)

ΔE/E is the fractional energy loss per cycle of the oscillation

This can be expressed in terms of angular frequency as:

Q= (ω/ Δω)

or frequency as:

Q= ( f/ Δf)

where Δ ω and Δ f are the width of the peak at its halfway point.
 
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Answers and Replies

  • #2
NascentOxygen
Staff Emeritus
Science Advisor
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Hi Ryan. http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif [Broken]

Q can be expressed in terms of angular frequency as:

Q= (ω/ Δω)
This relation is what you'll use to estimate Q. Can you explain what it's saying?
 
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