NEWTON'S LAWS
Fitton
III
Normalforce forcecomponentofaforceexertedbyasurfaceonanobjectincontactwithitthatis t tothesurface
forceactsparalleltothesurfaceandopposesanobtect'smotion
Staticfrictionalforceforcethat opposesastationaryobject'stendencytomoverelativeto asurface
kineticfrictionalforceforcethatopposesamovingobject'smotionrelativeto a surface
Frictionalforceis
Proportional to Fn
Independentofthearea
ofcontact
Isindependentofthevelocityofmotion
NOTE
Force F magnitudetothestaticfrictionalforceif aforce f appliedto abodyparalleltothesurfacedoesnot
causetheobjecttomove
Staticfrictionalforce is amaximum fsmax justbeforetheobjectstartstomoveacrossthesurface
IfTheappliedforceexceedsImax aresultantnetforceacceleratestheobject
Newton's First LawsOFMotion
Abodywillremainin its stateof restormotion at constantvelocity
unlessanonzeroresultantnetforceactson it
duringa carcollisionthereisnounbalancedforceon
ThepersonsoaccordingtoNewton'sfirstlaw
Thepersonwillcontinuetomoveatthesamespeed
Theseatbeltspurposeistobringanunbalanced
forceto thepersonbystoppingthemfrom
movingout ofthecar
Newton'sSecondLaws Of Motion
witennetforceactsonanobject theobjectwillaccelerateinthedirectionof theforceandtheacceleration is
directlyproportionaltothenet
forceandinverselyproportionaltothemassof theobject
bFnet me at
9Fnet mb at
constantnet
force constantacceleration
Newton'sThirdLawsOFMotion
WhenobjectAexertsaforceonobtectB objectB simultaneouslyexertsanoppositelydirected
forceofequalmagnitude
onobjectA
Fitton
III
Normalforce forcecomponentofaforceexertedbyasurfaceonanobjectincontactwithitthatis t tothesurface
forceactsparalleltothesurfaceandopposesanobtect'smotion
Staticfrictionalforceforcethat opposesastationaryobject'stendencytomoverelativeto asurface
kineticfrictionalforceforcethatopposesamovingobject'smotionrelativeto a surface
Frictionalforceis
Proportional to Fn
Independentofthearea
ofcontact
Isindependentofthevelocityofmotion
NOTE
Force F magnitudetothestaticfrictionalforceif aforce f appliedto abodyparalleltothesurfacedoesnot
causetheobjecttomove
Staticfrictionalforce is amaximum fsmax justbeforetheobjectstartstomoveacrossthesurface
IfTheappliedforceexceedsImax aresultantnetforceacceleratestheobject
Newton's First LawsOFMotion
Abodywillremainin its stateof restormotion at constantvelocity
unlessanonzeroresultantnetforceactson it
duringa carcollisionthereisnounbalancedforceon
ThepersonsoaccordingtoNewton'sfirstlaw
Thepersonwillcontinuetomoveatthesamespeed
Theseatbeltspurposeistobringanunbalanced
forceto thepersonbystoppingthemfrom
movingout ofthecar
Newton'sSecondLaws Of Motion
witennetforceactsonanobject theobjectwillaccelerateinthedirectionof theforceandtheacceleration is
directlyproportionaltothenet
forceandinverselyproportionaltothemassof theobject
bFnet me at
9Fnet mb at
constantnet
force constantacceleration
Newton'sThirdLawsOFMotion
WhenobjectAexertsaforceonobtectB objectB simultaneouslyexertsanoppositelydirected
forceofequalmagnitude
onobjectA