Chapter 11: Vibrations and Waves

Simple Harmonic Motion

A simple animation of Hooke’s Law.

http://www.4physics.com/phy_demo/HookesLaw/HookesLaw.html

(Objective: Explain how force, velocity, and acceleration change as an object vibrates with simple harmonic motion; Calculate the spring force using Hooke’s Law. )

The first link here is to a video in which astronaut Scott Kelly demonstrates how he and others use the ARED (Advanced Resistive Exercise Device) to combat bone and muscle mass loss that occurs during spaceflight. The second link is to an experiment where you may analyze the mechanics of the ARED.

http://www.nasa.gov/multimedia/videogallery/index.html?media_id=39909781

(Objective: Explain how force, velocity, and acceleration change as an object vibrates with simple harmonic motion.)

http://www.nasa.gov/audience/foreducators/mathandscience/exploration/Prob_ARED_detail.html

(Objective: Explain how force, velocity, and acceleration change as an object vibrates with simple harmonic motion.)

Return to the circus for a demonstration of pendulum motion as performed by a trapeze artisit. This link also includes a deeper discussion of the science and mathematics behind pendulum motion.

http://www.pbs.org/opb/circus/classroom/circus-physics/pendulum-motion/

(Objective: Identify the conditions of simple harmonic motion.)

Measuring simple harmonic motion and different types of pendulums.

http://www.physics.ucla.edu/demoweb/demomanual/harmonic_motion_and_waves/simple_harmonic_motion/simple_harmonic_motion.html

http://www.physics.ucla.edu/demoweb/demomanual/harmonic_motion_and_waves/simple_harmonic_motion/simple_harmonic_motion.html

(Objective: Recognize the relationship between period and frequency.)

Waves

A demonstration of the wave-on-a-string example.

http://phet.colorado.edu/en/simulation/wave-on-a-string

(Objective: Distinguish local particle vibrations from overall wave motion.)

In this video, a simple a wave machine made of wooden skewers, duct tape, and gummi bears, demonstrates the properties of waves.

http://www.nationalstemcentre.org.uk/elibrary/resource/2096/wave-machine

http://www.nationalstemcentre.org.uk/elibrary/resource/2096/wave-machine

(Objective: Distinguish local particle vibrations from overall wave motion.)

Use a slinky to demonstrate waves and constructive interference.

http://hyperphysics.phy-astr.gsu.edu/hbase/sound/stawav.html

http://hyperphysics.phy-astr.gsu.edu/hbase/sound/stawav.html

(Objective: Interpret waveforms of transverse and longitudinal waves.)

This NASA video, “Launchpad: Wave Motion,” explores waves and wave motion on the International Space Station and their impact on sensitive equipment.

http://archive.org/details/NASA_Lauchpad_Wave_Motion_HD

(Objective: Apply the relationship among wave speed, frequency, and wavelength to solve problems.)