Typically, harmonic motion decreases in amplitude with time….this realistic model describes damped harmonic motion.. The damping effect is a result of friction and internal resistance of the system to further motion.. ID: 472474
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Presentations text content in 11-5 Damped Harmonic Motion
Slide1
11-5 Damped Harmonic Motion
Typically, harmonic motion decreases in amplitude with time….this realistic model describes damped harmonic motion.
The damping effect is a result of friction and internal resistance of the system to further motion.
Overdamped
means damping is so great that equilibrium takes longer to achieve.
Underdamped
means that a lack of damping causes the system to oscillate more freely and for longer…
Critical damping
means the system is damped to achieve equilibrium the quickest way.
Slide2
11-6 Forced Vibrations: Resonance
Natural frequency is the frequency that a system vibrates without interference…A forced vibration would be a vibration caused by an external force acting on a system.When damping is small, the amplitude is greatest at f=f0 …this is called resonance.Natural frequency is also called resonant frequency.
Slide3
11-7 Wave Motion
Mechanical waves are waves that involve particles or media moving in wave-like fashion… usually easy to see or touch.
Waves move at different velocities than the particles of the media in which they travel.
See 11-9 p323
A
pulse
is a single wave that travels through a medium.
Wavelength
is the distance between identical points in 2 successive waves.
Slide4
Wave Motion (cont’d)
A continuous or periodic wave has repeating pulses in a consistent pattern.Amplitude = ½ height
Slide5
Wave Motion (cont’d)
Wave velocity =
n
=
l
f (
n
=c for light waves)
See example 11-10 P326
Slide6
11-8 Types of Waves
A transverse wave is one in which the medium or particles are moving perpandicular to the direction of the wave propagation.A longitudinal wave is one in which the medium or particles are moving in the same direction as wave propagation.
Slide7
Waves (cont’d)
A wave traveling down a solid rod ……where E is the elastic modulus……where B is the bulk modulus for a gas or liquid.See Example11-11 page 328
Slide8
Homework (…keep your hands off of the key board!!!)
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DownloadNote - The PPT/PDF document "11-5 Damped Harmonic Motion" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Presentations text content in 11-5 Damped Harmonic Motion
11-5 Damped Harmonic Motion
Typically, harmonic motion decreases in amplitude with time….this realistic model describes damped harmonic motion.
The damping effect is a result of friction and internal resistance of the system to further motion.
Overdamped
means damping is so great that equilibrium takes longer to achieve.
Underdamped
means that a lack of damping causes the system to oscillate more freely and for longer…
Critical damping
means the system is damped to achieve equilibrium the quickest way.
Slide211-6 Forced Vibrations: Resonance
Natural frequency is the frequency that a system vibrates without interference…A forced vibration would be a vibration caused by an external force acting on a system.When damping is small, the amplitude is greatest at f=f0 …this is called resonance.Natural frequency is also called resonant frequency.
Slide311-7 Wave Motion
Mechanical waves are waves that involve particles or media moving in wave-like fashion… usually easy to see or touch.
Waves move at different velocities than the particles of the media in which they travel.
See 11-9 p323
A
pulse
is a single wave that travels through a medium.
Wavelength
is the distance between identical points in 2 successive waves.
Slide4Wave Motion (cont’d)
A continuous or periodic wave has repeating pulses in a consistent pattern.Amplitude = ½ height
Slide5Wave Motion (cont’d)
Wave velocity =
n
=
l
f (
n
=c for light waves)
See example 11-10 P326
Slide611-8 Types of Waves
A transverse wave is one in which the medium or particles are moving perpandicular to the direction of the wave propagation.A longitudinal wave is one in which the medium or particles are moving in the same direction as wave propagation.
Slide7Waves (cont’d)
A wave traveling down a solid rod ……where E is the elastic modulus……where B is the bulk modulus for a gas or liquid.See Example11-11 page 328
Slide8Homework (…keep your hands off of the key board!!!)
Page 342 pr# 17, 28-30, 34-40 due BOP Thursday
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