Question

What are the laws of Static Friction?

Answer 1

i) Friction is proportional to the force acting perpendicular to the frictional surface

F α mg
F = υmg (υ is the coefficient of static friction)

ii)Friction is independent of the area where friction acts (contact area)

Answer 2

Answer:

$\sf (1) Friction\: always\: opposes\: relative\: motion\: and\: act\: in\: the\: opposite\: direction$

$\sf of\: motion\: of\: the\: body$

$\sf (2) Friction\: is\: independant\: of\: area\: off\: contact$

$\sf (3) Friction\: depends\: only\: on\: normal (perpendicular)\: reaction$