# How does friction increase and decrease?

When a body slides over the surface of another body, there is an opposing force acting in opposite direction of motion and this opposing force is called friction.Their are various ways by means of which, we can increase or decrease friction. At times it becomes necessary to increase or to decrease friction.
A.

### What factors decrease friction?

These factors are: Surface Finish — The number, roughness and even the directional contact points of the asperities on the surfaces can dramatically affect the frictional coefficient. Temperature — Both ambient and operational temperature can affect friction.
• #### Why is it important to have friction?

Although you normally hear about trying to reduce or eliminate friction, it actually has some important uses. Since friction is a resistance force that slows down or prevents motion, it is necessary in many applications where you might want to hold items or do things and prevent slipping or sliding.
• #### How does the force of friction work?

Friction is the resistance of motion when one object rubs against another. Anytime two objects rub against each other, they cause friction. Friction works against the motion and acts in the opposite direction. When one object is sliding on another it starts to slow down due to friction.
• #### When friction is useful?

Friction can be useful: friction between our shoes and the floor stop us from slipping. friction between tyres and the road stop cars from skidding. friction between the brakes and wheel help bikes and cars slow down.
B.

### How can you decrease friction?

It is beneficial to reduce the friction between surfaces to make movement easier or reduce the wear and tear on a surface. There are a number of ways to reduce friction: Make the surfaces smoother. Rough surfaces produce more friction and smooth surfaces reduce friction.
• #### How does the use of a lubricant reduce friction?

Lubricant. A lubricant is a substance, usually organic, introduced to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. It may also have the function of transmitting forces, transporting foreign particles, or heating or cooling the surfaces.
• #### How do static friction and kinetic friction differ from each other?

Slide 1. The Force of Static Friction keeps a stationary object at rest! Once the Force of Static Friction is overcome, the Force of Kinetic Friction is what slows down a moving object!
• #### What are the factors affecting friction?

The smoothness of the contacting surfaces influences friction. If two surfaces are rough than if they are smooth, then is important to action witha greater force. Friction does not depend on the amount of surface area in contact between the moving bodies or (within certain limits) on the relative speed of the bodies.
C.

### What are the factors that affect friction?

If two surfaces are rough than if they are smooth, then is important to action witha greater force. However, friction decreases with smoothness only to a degree; friction actually increases between two extremely smooth surfaces because of increased attractive electrostatic forces between their atoms.
• #### What are two factors that determine the amount of friction?

The strength of the force of friction depends on two factors: how hard the surfaces push together and the types of surfaces involved. What factors affect the gravitational force between two objects? Two factors affect the gravitational attraction between objects: mass and distance.
• #### How friction is good?

Friction is a force that works against motion. While walking, friction helps us maintain our stability and prevents us from slipping. Friction also works the same way with cars and vehicles in general, preventing them from skidding and helping them stop when the brakes are applied.
• #### What are the factors that affect the coefficient of friction?

Ideally, the coefficient of kinetic friction only depends on the nature of the surfaces. It does not depend on any other factors, including the relative speed of the surfaces and the surface area of contact. You will determine µ. You investigate the force of friction by studying objects moving at constant speed.

Updated: 18th November 2019