1. What do these have in common?

2. All are examples of oscillatory motion!
Oscillate means to go back & forth

3. All are examples of oscillatory motion!
Oscillate means to go back & forth
Oscillatory motion is extremely common
Pendulums
Springs
WAVES (light, sound, strings, etc!)

4. Oscillatory motion vocabulary
Equilibrium position – position where an object would rest if not disturbed. Displacement x, θ – displacement from equilibrium position. Amplitude A, θ0 – the maximum displacement of an oscillating object from equilibrium.

5. Oscillatory motion vocabulary
Cycle – one complete oscillation
Period (T) – the time it takes an oscillating system to make one complete oscillation.
(A  C  A )
Frequency (f) – the number of complete oscillations made by the system in one second.
Frequency = 1/period
units: 1/s = s-1 = 1 Hz (hertz)

6. Oscillatory motion vocabulary
Turn & Talk What is the equilibrium position for a pendulum? What is the difference between displacement and amplitude? What is period? How do you find it?

7. Pendulum Lab Objectives
Learning objective(s):
Describe factors that influence the period of pendulum.
Skill objective(s):
Take measurements with accuracy and precision
Process data, including finding averages & uncertainties,
Construct well-labeled graphs with best-fit lines and error bars
Interpret your results!