Friction in the Direction of Motion

In summary, friction in the direction of motion, also known as kinetic friction, is the force that resists motion between two surfaces that are in contact and moving relative to each other. It is caused by microscopic irregularities on the surface of objects and is affected by factors such as surface type, applied force, and lubricants. It differs from static friction in that it only occurs during motion and is typically lower in magnitude. While it can be beneficial in certain situations, excessive friction can also lead to damage and inefficiency.
  • #1
chrisdapos
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0

Homework Statement


Is it possible for friction to act in the same direction as the motion of an object? If so, are there any real world examples? Thank you!


The Attempt at a Solution


I don't know where to start...
 
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  • #2
I don't think there is...at least to my knowledge...friction always opposes motion...
 
  • #3
Place a box on a moving conveyor belt. What happens?

(A better way to describe friction is to say that it always opposes slipping between surfaces.)
 

1. What is friction in the direction of motion?

Friction in the direction of motion, also known as kinetic friction, is the force that resists motion between two surfaces that are in contact and moving relative to each other.

2. How is friction in the direction of motion caused?

Friction in the direction of motion is caused by the microscopic irregularities on the surface of objects. When two surfaces come into contact and slide against each other, these irregularities interlock and create resistance, resulting in friction.

3. What factors affect the magnitude of friction in the direction of motion?

The magnitude of friction in the direction of motion is affected by several factors, including the type of surfaces in contact, the force pushing the surfaces together, and the presence of any lubricants. Rougher surfaces and higher applied forces typically result in greater friction. Lubricants can reduce friction by creating a slippery layer between the surfaces.

4. How is friction in the direction of motion different from static friction?

Friction in the direction of motion is different from static friction in that it only occurs when two surfaces are in motion, while static friction occurs when two surfaces are at rest and trying to move relative to each other. Additionally, the magnitude of friction in the direction of motion is typically lower than that of static friction.

5. Can friction in the direction of motion be beneficial?

Yes, friction in the direction of motion can be beneficial in many cases. For example, it allows us to walk without slipping, helps us control the speed of vehicles, and is essential for many industrial processes such as grinding and polishing. However, excessive friction can also cause wear and tear on surfaces, leading to damage and inefficiency.

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