Physics Course/Motion/Periodic Motion/Wave

Water Wave

Concentric Circles

Concentric circles travels in a direction when there is a cobble drops on the water surface

$x^2+y^2=r^2$

$Tan\theta =\frac{y}{x}$

Which can be expressed as

$y(\theta )=rSin\theta$

$x(\theta )=rCos\theta$

High Low Wave

Water wave moves in a direction that changes its amplitude sinusoidally

$y(t)=rSin\omega t$

$\omega =\frac{\lambda }{t}=\lambda f$

With

$\lambda$ : Wavelength . The distance between 2 crests (highest point)

$f$ : Frequency . frequency of time to complete a cycle