the types of frition between treps of veichel and road is ____
Answers
Answer:
These types are known as static friction and kinetic friction. Static friction is the frictional force required to start an object moving on another surface. Kinetic frictional force is the force to keep the object in motion. ... Once you get your car moving the tires do not need as great of a force to keep moving.
Answer:
Explanation:
Whether driving a small go-kart or a heavy hauler, you must have traction to move forward. Actually, you can’t even walk without it. Traction is a commonly used word and many believe it’s just another word for friction. But is it really? Let’s have a closer look at friction and traction – what it is and why it’s so fundamental to safe driving.
We all know the feeling when tyres lose grip and the vehicle starts skidding. Controlled skidding in a go-kart could be fun, but a heavy vehicle unexpectedly skidding on a road could cause a very dangerous situation. The skidding is due to the vehicle losing road grip and obviously, this has to do with tyres and road surface.
It’s all about friction
First, let’s dive into the physics of friction and add some rubber and asphalt. Friction as such doesn’t move the vehicle forward. Friction is a resisting force that resists the relative motion of two surfaces. Simply put, when driving, the engine generates a force on the driving wheels that moves the vehicle onwards. Friction is the force that opposes the tyre rubber from sliding on the road surface. However, things are not really that simple – we have two different frictions to consider; static and kinetic friction.
Static friction – the frictional force between surfaces that are NOT moving relative to each other.
Kinetic friction – the frictional force between surfaces that ARE moving relative to each other.
But when the wheels are rolling isn’t it about kinetic friction? No. When driving on a dry road, irrespective of vehicle speed, it’s the static friction that keeps the vehicle steady on course. If you look at it in a microscope – and in very slow-motion – the contact area of the tyre doesn’t move relative to the road surface. It’s just that continuously new parts of the tyre gets in contact with the road as the wheel is rolling.
Friction is critical for manoeuvring a vehicle
Now you know that static friction keeps the vehicle on the proper course when driving at steady pace. But there are also other situations when friction is fundamental for making the vehicle behave the way you want:
When you accelerate
When you turn
When you brake
In these situations, it is crucial that the static frictional force exceeds other forces, e.g. kinetic energy, that may put your vehicle out of your control. Otherwise you lose road grip. So, what will influence your road grip?
Road grip is a sum of variables
Actually, there are several factors that affect the road grip. Some of which are critical.
The material of the contacting surfaces, i.e. rubber quality and road surface material.
The texture of these materials, i.e. the rougher texture the better road grip.
The force pressing the surfaces together, i.e. the weight of the vehicle.
Other materials between the contact surfaces, e.g. water, ice, gravel or oil spill.
In a typical driving situation, the first three factors are rather constant; our vehicle has a certain weight and certain tyres, and we drive on a long road. Accordingly, we adapt our driving style to these given factors. But all of a sudden, there could be a heavy rain, and everything changes…