Terms
-
Oscillating system
Any system that always experiences a force acting against the displacement of
the system (restoring force).
-
Restoring force
A force that always acts against the displacement of the system.
-
Periodic Motion
Any motion in which a system returns to its initial position at a later time.
-
Amplitude
The maximum displacement of an oscillating system.
-
Period
The time it takes for a system to complete one oscillation.
-
Frequency
The rate at which a system completes an oscillation.
-
Hertz
The unit of measurement of frequency.
-
Angular Frequency
The radian measure of frequency: frequency times 2Π.
-
Simple Harmonic Motion
Any motion that experiences a restoring force proportional to the
displacement of the system.
Formulae
Relation between variables of oscillation
| σ = 2Πν =  |
Force exerted by a spring with constant k | F = - kx |
Differential equation describing simple harmonic motion
| + x = 0 |
Formula for the period of a mass-spring system
| T = 2Π |
Formula for the frequency of a mass-spring system
| ν =   |
Formula for the angular frequency of a mass-spring system
| σ =  |
Equation for the displacement in simple harmonic motion
| x = xmcos(σt) |
Equation for the velocity in simple harmonic motion
| v = σxmsin(σt) |
Equation for the acceleration in simple harmonic motion
| a = σ2xmcos(σt) |
Equation for the potential
energy of a simple
harmonic system
| U = kx2 |