(7)+Oscillations

PAGE EDITOR(S): Omar Jarrett, Jake Russin, Jeremy Fryd, Matt Nostro





Here's a cool website with a lot of simple animations to better understand Simple Harmonic Motions and how the sin/cosin graphs fit in.

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This one also has some dynamite figures: [] =Simple Harmonic Motion Equations= The motion equation for [|simple harmonic motion] contains a complete description of the motion, and other parameters of the motion can be calculated from it. || The maximum velocity and acceleration are given by The total energy for an undamped oscillator is the sum of its [|kinetic energy] and [|potential energy], which is constant at ||
 * [[image:http://hyperphysics.phy-astr.gsu.edu/hbase/imgmec/shm2.gif align="center"]]

Here is a really interesting and relevant video that explains exactly how Simple Harmonic Motion works: [][]



The motion equation for simple harmonic motion contains a complete description of the motion, and other parameters of the motion can be calculated from it.

The velocity and acceleration are given by

The total energy for an undamped oscillator is the sum of its kinetic energy and potential energy, which is constant at  Here is the link to the image's website This image is pretty similar to the one that Mr. Natland draws on the left side of the board all the time. At the top, the spring is being stretched out so the spring is pulling it back towards the equilibrium point. At this point, the force exerted by the spring is greatest and the acceleration of block is also greatest, assuming that this it is at its amplitude. As the block gets pulled back, the force exerted by the spring on the block decreases according to the equation (spring force)=kx, where x is. When the object passes throught the equilibrium point during the oscillation, its velocity is at a maximum and its acceleration is at 0. Then when the block continues to the left of the equilibrium point, the force of spring pushes the other way, towards the equilibrium point. The reason that it continues to move to the left even though the net force is to the right is because it has kinetic energy. As it goes to the left, it slows down and the kinetic energy is converted back to spring energy.

This video shows a large pendulum used to disperse incense in the Cathedral of Santiago de Compostela in Galicia, Spain. []

[|Online quiz] Useful Pictures, Videos, and Websites

[] (Nice animation of the SHM of an oscillating vertical spring)

http://www.youtube.com/watch?v=bPtlRf6dg8c&feature=related ( Simple harmonic motion in three minutes!)

http://www.splung.com/content/sid/2/page/shm (lays out formulas of simple harmonic motion really well)

media type="youtube" key="ltwxC19s5u8" height="344" width="425" Slinky+Jim Carrey+Buddhist Tempel= SHM  Links: http://www.walter-fendt.de/ph11e/pendulum.htm (At the above link, you can change the length, mass, and amplitude for a pendulum and see how the period changes.)

http://www.walter-fendt.de/ph11e/springpendulum.htm (At the above link, you can change the spring constant, mass, and amplitude of a spring, and see how it changes the acceleration, velocity, and energy.)

Practice Problem: 1. http://apcentral.collegeboard.com/apc/public/repository/ap09_frq_physics_b.pdf

http://apcentral.collegeboard.com/apc/public/repository/ap09_frq_physics_b.pdf (For AP problem)__**
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