Simple Harmonic Motion. Periodic motion that has a restoring force that is proportional to its displacement Back and forth motion (repetitive motion) Springs, Pendulums, Waves. Types of SHM. Springs Hooke’s Law – F = - kx PE = ½kx 2 Period (T) = 2 m/k. Pendulums Period (T) = 2 L/g.
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Transverse vs. Longitudinal
Mechanical vs. Electromagnetic
The bending of waves through an opening or around a barrier
Think of water waves
Angle of incidence = angle of reflection
Flat, Plane Mirrors
Used for magnification
Makes images smaller
Used in side mirrors of cars