Friction is the force created by two objects when they move against one another. Friction is usually the main reason as to why it is hard to slide a desk on the floor. Now a car is a fine piece of machinery that uses gas, electricity, or both to power its engine and move on four wheels. Many people ask themselves, “How is a car affected by friction if the wheels are round?” Well there are many ways to explain why the car does stop or ultimately get affected by the friction.

Types of Friction

There are two types of friction that affect cars, static friction and kinetic friction. Static friction is the friction force that exists between an object and the surface on which it is resting. For example, if you were to wear shoes to push a heavy couch, your shoes would provide the static friction required for your grip onto the floor. Now, kinetic friction is when two objects are moving relative to each other and their forces head opposite directions. For example, when you push a box and it skids across a floor to the north, the force from the box would head north and the floor’s force would head to the south.

Where Can We See This in Cars?

You can see all kinds of friction in a car. For example, when you start the engine of a car, the tires start to move. But what causes the car to move forward? The ground does. So in this instance, the ground is the static friction. Kinetic friction can also be seen in a car. Kinetic friction is seen in a car is when one breaks. When a person is driving north and presses their breaks, why does the car stop? This is because the force from the car is moving north and the ground with which the car rubs against heads the other direction, or south in this case.

What Key Components Are There to Friction?

There are many key components that attribute friction. One key component to friction is weight. Let’s say there is a 2-ton vehicle and a 10-ton vehicle. The two-ton vehicle would obviously be easier to push because less force would have to be applied to move the car. In other words, less newtons would have to be applied on the two-ton car. Smoothness would also be a huge factor. Friction occurs because all surfaces have irregular surfaces even if they seem to be smooth. A ball might seem smooth, but under a microscope, there are many jagged edges on the surface of the ball. One interesting fact, however, is that friction does not depend on speed. A car skidding at low speed has the same friction of a car traveling at a high speed.

Source by Jay Hyunki Ju

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