_ Pick up wrong statement about friction force for dry surfaces. Frict – McqOptions

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1.	_ Pick up wrong statement about friction force for dry surfaces. Friction force is$?
A.	Proportional to normal load between the surfaces
B.	Dependent on the materials of contact surface
C.	Proportional to velocity of sliding
D.	Independent of the area of contact surfaces
Answer» D. Independent of the area of contact surfaces

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