Question

the correct answer sentence among the following are normal force does not affect the frictional force area of contact does not affect the frictional force normal force affect the frictional force area of contact affect the frictional force which is correct statement​

Answer 1

Answer:

Frictional resistance is directly proportion to the force applied to the two surfaces as well as the roughness of the surfaces. The rougher the surfaces, the greater the resistance

Friction is caused when two surfaces move against each other in opposing directions.

The resistance offered by friction depends directly on the force applied to move the two surfaces and the roughness of the surfaces.

The smoother the surfaces, the less the resistance; the rougher the surface, the more the resistance

(II).The frictional force is directly proportional to the normal force between the two surfaces in contact. Because when two surfaces are pressed together harder, there is more friction.

(III). Since pressure equals force divided by the area of contact, it works out that the increase in friction generating area is exactly offset by the reduction in pressure; the resulting frictional forces then, are dependent only on the frictional coefficient of the materials and the force holding them together.

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