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lecture9-SHM - So far uids Density pressure buoyancy...

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So far … fluids: Density, pressure, buoyancy Equa9on of con9nuity & Bernoulli’s equa9on today simple harmonic mo9on defini9ons of period (T), frequency (f), angular frequency (ω) Note: office hours TODAY shiKed to 4:30 – 5:30 PM in Hennings Rm. 334
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Oscilla9ons Demo : Mass swinging at the end of a spring. Why is this interes9ng? Model system for everything that oscillates and vibrates, for example: Molecules Loudspeakers Buildings and Bridges video: Tacoma Narrows Bridge
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) cos( ) ( φ ω + = t A t x position plot
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What is the amplitude of the shown harmonic motion ? A) -4.0 m B) 2.0 m C) 4.0 m D) 8.0 m E) 12.0 m Question
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What is the period of the shown harmonic motion ? A) 1.0 s B) 2.5 s C) 4.0 s D) 5.0 s E) 6.0 s Question
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Mass oscilla9ng at the end of a spring Observa9on: Mo9on repeats, periodic mo9on Do you know other examples of periodic mo9on? What do these mo9ons have in common, or in other words: What makes a mo9on periodic?
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