Coefficient of Friction - F = ma (AQA A-Level Mathematics): Flashcards

Resistive force opposing motion between surfaces in contact

Dimensionless quantity

$\mu = \frac{F_{\text{friction}}}{N}$

Frictional force that must be overcome to start motion

Frictional force acting on object already in motion

$F_{\text{friction}} = \mu N$

$N = mg$

$F - \mu mg = ma$

$N = mg \cos \theta$

$a = g(\sin \theta - \mu \cos \theta)$