PHYSICAL QUANTITY

Amplitude: formulas and units of measurement

Amplitude: symbol A, xₘ, unit m. Formulas and explanations for Oscillations and waves.

A,\ x_m

A, xₘ

\text{m}

meter

KEY CONNECTIONS

Formulas

x = x_{m} cos (ω t)

x = xₘ cos(ωt)

q = q_{m} cos (ω t)

q = qₘ cos(ωt)

i = I_{m} cos (ω t)

i = Iₘ cos(ωt)

v_{m} = x_{m} ω

vₘ = xₘω

a_{m} = x_{m} ω^{2}

aₘ = xₘω²

I_{m} = q_{m} ω

Iₘ = qₘω

NOTATION

$x$: Displacement is the vector of change in body position relative to the starting point.
$x_m$: The displacement amplitude is the largest deviation in absolute value from the equilibrium position.
$\omega$: Cyclic frequency is the rate of change in the phase of oscillation.
$t$: Time is a quantity characterizing the duration and sequence of events.
$q$: Electric charge is a quantity that determines the participation of a body in electrical interaction.
$q_m$: Charge amplitude is the largest absolute charge value during oscillations.
$i$: Current strength is the charge passing through the cross section of a conductor per unit time.
$I_m$: Current amplitude is the largest absolute value of the current during oscillations.
$v_m$: Maximum speed - the highest speed value during oscillations.
$a_m$: Maximum acceleration - the highest acceleration value during oscillations.

THEORY

PRACTICE