Question

The frictional force between two surfaces is independent of

Answer 1

The frictional force between two surfaces is independent of $\underline {surface\:area}$.

The frictional force between two surfaces is directly proportional to the normal force pressing them together.

Answer 2

Answer: area of contact

Explanation:

• Part of the standard model of surface friction is the assumption that the frictional drag force between two surfaces is independent of the contact area.
• Part of the standard model of surface friction is the assumption that the frictional drag between two surfaces is independent of the speed of relative motion.
• This is mostly true for a wide range of low speeds, but as speed increases and air friction occurs, we find that friction depends not only on speed but also on the square of the speed and possibly even higher multipliers. increase.
• When working with liquid lubricants, velocity-dependent viscous drag occurs.

Part of the standard model of surface friction is the assumption that the frictional drag between two surfaces is proportional to the normal force pushing them together.

The common exception occurs in snow, where more traction comes from wider, lower-inflated tires. The same normal force is exerted, but wider tires compress less snow and therefore have more traction (friction). Snow packing tends to depend on the pressure applied to the snow, and carrying the same weight in a smaller area means more pressure is applied.

#SPJ6