PHYSICS
L4_8.pptx

# L4_8.pptx - Topics for Today Oscillations or simple...

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Topics for Today Oscillations or simple harmonic motion (15-1) Energy in simple harmonic motion (15-2)

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Any motion that repeats regularly is called periodic. Period is time in seconds for one full cycle = P . Frequency of an oscillation is the number of times per second that it completes a full oscillation = f = 1/ P . Unit of f is hertz: 1 Hz = 1 oscillation per second. Simple Harmonic Motion
Simple harmonic motion is periodic motion that is a sinusoidal function of time: Simple Harmonic Motion

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Simple harmonic motion is periodic motion that is a sinusoidal function of time: Simple Harmonic Motion
We have an oscillator: Quiz: what is the maximum distance that the mass moves away from the origin? A = 0 m, B = 0.1 m, C = 0.2 m, D = 0.4 m Quiz: how long does the mass take to complete one full oscillation? A = 0.0159 s, B = 0.1 s, C = 1 s, D = 62.8 s Quiz: where is the mass at t = 0? A = 0 m, B = 0.1 m, C = 0.2 m, D = 0.4 m Simple Harmonic Motion

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Displacement: Velocity: Maximum velocity Acceleration: Note that acceleration has the same time dependence as displacement Simple Harmonic Motion
Displacement: Velocity: Acceleration: Simple Harmonic Motion

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• Spring '12
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