|SHM | Wave terms | Wave Phenomena |
associated with Comp 10.1 / chap 13
HW problems; answers: 1-4 and book
SHM | Harmonic motion
- presence of a restoring force |
Simple Harmonic motion: |
|
vocabulary |
frequency/period/angular frequency |
Mode: -transverse -longitudinal (translational) rarefaction/compression -torsional (rotational) |
|
period (T) in sec - the time it takes for one complete oscillation, vibration, or cycle | frequency (f) =1/T in Hz (s^-1) - the number of oscillations, vibrations, or cycles per second |
angular frequency cycle/oscillation/vibration: |
amplitude (A) typically in m or °/rad - the maximum displacement of the object from its equilibrium position or its axis of symmetry |
3 types of SHM: 1) longitudinal 2) transverse 3) torsional |
|||
Longitudinal: the mass is displaced parallel (or antiparallel) to the axis of symmetry or the amplitude is along the axis of symmetry creating areas of compression and rarefaction; amplitude is measured as a distance |
transverse: the mass is displaced perpendicular to the axis of symmetry; amplitude is measured as a distance or an angle (angle is preferred) | torsional: the mass is rotated around the axis of symmetry; amplitude is measured as an angle | simple pendulum: system where the mass is concentrated a distance L from the pivot point |
|
last modified 1-29-06