Key Equations

Magnitude of static friction	$f_{\text{s}}\le {\mu }_{\text{s}}N$
Magnitude of kinetic friction	$f_k={\mu }_{k}N$
Centripetal force	$F_{\text{c}}=m\frac{v^2}{r}\text{or}{F}_{\text{c}}=mr{\omega }^2$
Ideal angle of a banked curve	$\text{tan}\theta =\frac{v^2}{rg}$
Drag force	$F_D=\frac{1}{2}C\rho A{v}^2$
Stokes’ law	$F_{\text{s}}=6\pi r\eta v$