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10 cards from this deck
Resistive force opposing motion between surfaces in contact
Dimensionless quantity
μ=FfrictionN\mu = \frac{F_{\text{friction}}}{N}μ=NFfriction
Frictional force that must be overcome to start motion
Frictional force acting on object already in motion
Ffriction=μNF_{\text{friction}} = \mu NFfriction=μN
N=mgN = mgN=mg
F−μmg=maF - \mu mg = maF−μmg=ma
N=mgcosθN = mg \cos \thetaN=mgcosθ
a=g(sinθ−μcosθ)a = g(\sin \theta - \mu \cos \theta)a=g(sinθ−μcosθ)
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