Phys 1C Wk 1 Quiz 1 content Oscillations & Sinusoids

What is negative feedback? hint; restoration

A mechanism that restores a system to equilibrium (eg; body temp)

Simple Harmonic Oscillator (SHO)?

A mass-spring system that oscillates sinusoidally between KE and PE due to a linear restoring force.

What are amplitude and period of y = cos(t)?

Amplitude = 1; Period T = 2π

How are vector components found using angles?

x = r·cos(θ), y = r·sin(θ)

General form of sinusoidal function, y = A·cos(ωt + φ) + y₀ parameters?

A = amplitude, ω = angular frequency, φ = phase shift, y₀ = vertical shift

What are vmax and amax in Simple Harmonic Motion?

vmax = ωA, amax = ω²A

Spring system where mass affects period

What is the differential equation for SHO?

d²x/dt² = - (k/m) x

SHO total energy conserved= KE+PE

Period proportionality to spring constant and mass

When does SHM spring have maximum velocity & KE

At equillibrium postion

Applied force Y axis and Displacement X axis area under curve exemplifies?

Work done on system

Spring constant of bb gun barrell horizontal

PE spring = KE spring

Vibrational Frequency

Frequency=Velocity/Wavelength

Mass spring system frequency

Function of position Ex) 4.5(cos(3.4*t)) when does it cross x(t)=0 (y axis)

Cos (θ)=0