Question

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

Answer 1

Answer:

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Explanation:

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Answer 2

The frictional force between block A and the surface will be same as that between block B and surface.

The frictional force is given by:

F = μN  

Where μ is the frictional coefficient and N is the normal force.  

• The normal force only depends on the mass of the body and the acceleration due to gravity.
• Since the mass of the two blocks is equal and g is also constant, therefore the frictional force between the two block and the surface will be same as the frictional coefficient is same for both of them.
• Frictional force is independent of area un till and unless the area is very very small.