Fluid Dynamics How does conservation of mass apply in a fluid? How does conservation of energy apply...

Fluid DynamicsHow does conservation of mass apply in a fluid?How does conservation of energy apply in a fluid?What is laminar flow?What is turbulence and viscosity?

Examples?Demos?

A U-tubeA Venturi tube

Ch12

Ch14 Periodic MotionWorksheetsWhat is oscillatory motion?

• Period• Frequency• Amplitude

What is simple harmonic motion?

If two motions have the same period, frequency, and amplitude are they the same motion?

How many radians are we through the day?

Ch14Visualizing Periodic MotionHow do we visualize SHM?Graphing one from the otherWhere is the acceleration the greatest?Equations – position, velocity, acceleration

Ch14Oscillatory DynamicsCharacteristic Equation

Springs• Does weight matter?• How do you find the initial phase angle?• How do you deal with the signs?

Pendula• Why the small angle approximation?• Physical pendula

Energy story • Are these systems conservative?• Do we get the same answer using energy conservation?• SHO approximation

Ch14Damped, Driven OscillationsSum forces for a damped SHO

• Solutions• Under, over, critically damped

Ch14Damped, Driven OscillationsSum forces for a driven SHO

• Solutions• Driving and natural frequency

Ch14Damped, Driven OscillationsSum forces for a damped, driven SHO

• Solutions• Resonance• What is the criteria for resonance?• What are resonance phenomena?

Self-organization/Synchronicisty

Ch14 ProblemsWhat questions do you have?Lab 7