Q.

Two blocks A and B of the same mass and surface finish are sliding on the same surface. Area of contact of A is twice that of the B. The frictional force between A and the surface is

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a

depends on the power supplied

b

twice that of B

c

same that of B

d

half that of B

answer is C.

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Detailed Solution

As the frictional force will not depend on the area of surface, The frictional force in both the cases will be the same.

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Two blocks A and B of the same mass and surface finish are sliding on the same surface. Area of contact of A is twice that of the B. The frictional force between A and the surface is