1.

What is friction ? Explain static frictional force is caused due to roughness of force at microscopic level.

Answer»

Solution :Wheneverthereis relativemotionbetweentwosurfacethe forcedue to L whichrelativemotionis retarded is calledfrictionalforce.
Asshownin figureanobjectis placedon HORIZONTALSURFACE

Weightandnormalforcebalanceeach other
LethorizonatalforceforceF isappliedto OBJECT
`mu_(s )` is unitlessanddimensionlessRatioofmaximum staticfrictionand normalforceiscalledco -efficientof staticfrcition.
Itsvalueis inrangeof 0.01to 1.5
ifobjectdoesnotmovethan`f_(s)gt mu_(s )N.`


Discussion

No Comment Found

Related InterviewSolutions