The braking distance has nothing to do with the weight of the car, why do some people say that the b

For this issue, I think you are overlooking one very important thing, and that is inertia. We all know that moving objects produce inertia, and the magnitude of inertia is directly related to and proportional to the speed of motion, the size and mass of the object. So we can imagine that the faster the car, the greater the inertia and braking distance.

The heavier the mass, the greater the inertia, the longer the braking distance of the same vehicle. Of course, we'll consider ground friction. Friction will increase, and the car will come to a stop easily, but this is the most dangerous.

The short braking of a car can lead to uncontrollable accidents like rollover, car damage, and death.

We also often see such ** on our phones. For example, when a large truck is driving at high speed and encounters an emergency, it will brake sharply, and then the truck will roll over dozens of meters, causing a major accident. In fact, it's the role of inertia.

Therefore, it is a lie and a mistake to say that the truck cannot stop in an emergency.

So what is the problem? In fact, the main topic ignores an important question:How do the wheels of a car stop?

How to stop it! It's about the braking system of the car. Take, for example, a big truck.

When the driver presses the brake pedal, the brake pedal linkage pushes the compressed air valve. Compressed air passes through pipes to quickly reach the brake chambers of each tire of the car. The brake chamber linkage drives the brake shoes.

Strong pressure acts on the brake hub. The brakes and hub create a strong friction force to prevent the tires from spinning until the tires stop rotating. However, the vehicle continues to move forward under the action of inertia.

Frictional resistance occurs when the tires do not rotate or when the speed slows down with the ground. Vehicle deceleration and stopping is the result of this frictional resistance.

The truck braking system is designed and manufactured according to the loading quality of the vehicle. The international standard for the load mass of a single axle for large freight vehicles is 10 tons, i.e. 5 tons per tire on one side. All components of the braking system for large trucks are designed according to this standard.

Of course, manufacturers can design braking systems with a standard of more than 5 tons, but such a system will increase the cost of production and the cost of use. Is it possible to design a smaller one? Not at all!

When the vehicle is fully loaded, it cannot brake, so it must be perfectly matched, neither big nor small. In fact, large trucks on the road are designed with braking systems based on this standard. As long as the cargo vehicles are not overloaded and loaded according to the approved loading mass, they theoretically do not fail braking.

The owners think that weight doesn't matter, and that's right. However, once overloaded, the braking system cannot meet the braking requirements. Since the frictional resistance between the wheel and the ground is greater than the design preset resistance when overloaded, the first reaction is that the friction between the brake shoe and the wheel hub is insufficient.

In other words, the moment formed by the frictional resistance between the tire and the ground is greater than the moment formed by the frictional resistance between the brake shoe and the hub. When the tires continue to rotate, they cannot brake, which prolongs the braking distance and endangers driving safety. Therefore, this is the basis for the traffic police department to combat overloading.

Because the weight of the cart is too large, the braking distance is very long. I think you are ignoring something very important in this issue. That is the inertia that we know that moving objects produce inertia, and the magnitude of inertia is directly related and proportional to the velocity, magnitude, and mass of the object.

Therefore, the faster the car, the greater the inertia and the longer the braking distance. <>

First of all, there is an inertial effect when the vehicle is moving. What is Inertia? Let's take a look at Newton's law:

Newton's first law of motion, known as Newton's first law. Also known as the law of inertia, the law of inertia. General complete representation:

All the objects must continue to move at a constant or constant speed until the state of motion changes due to an external force. Here, in a moving vehicle, in order to brake the vehicle, the external forces include friction between the tires and the ground, friction between the brake discs, and friction between the wheels and axles. The mass of a vehicle is often understood as the weight of the vehicle.

According to Newton's second law, acceleration is inversely proportional to the mass of the vehicle. In other words, the smaller the vehicle, the greater the acceleration; Otherwise, the larger the vehicle, the smaller the acceleration. The actual brakes control deceleration, and if the car is heavier, the brakes will decelerate less and brake will be less likely.

The lighter the car, the greater the braking deceleration, and the easier it is to brake. <>

In terms of speed, the faster you travel, the longer the braking distance. The braking system of the car has its own characteristics. The feedback time and feedback intensity are fixed values, and if the mass of the vehicle exceeds a certain limit, the time from braking to maximum braking will also be extended, and as the friction increases, the temperature of the brake pads will increase and the braking action time will also be extended.

The maximum braking force may not be enough to counteract the friction at this point. In other words, it can't be stopped. This often happens when heavy trucks go a long downhill road.

Truck drivers know that large trucks all over the world weigh more than 10 tons, and large trucks traveling on the road carry tens of tons of goods, so heavy trucks have relatively long braking distances. In addition, the driver's position of a large truck is relatively high, and the blind spot of a new car is large, so it is difficult to brake the car due to inertia, even if something suddenly noticeable occurs during driving. Because the car is not easy to start, please try not to brake the driver.

Otherwise it's hard to start. In other words, it costs money to start a big truck, and avoiding cost losses is what a mature driver should do.

I think there is still a certain relationship, after all, the mass of the car is very large, and the inertia is also very large.

It's hard to keep the overall weight down with a small brake system.

I think this is still related, and braking and inertia are also related.

Let's have inertia. After all, the car is too big, and the inertia is relatively large.

The tires are a very important factor that affects braking performance because the friction between the brake pads and the brake disc is large enough, so the brakes require friction between the tires and the ground. Brake fluid is incompressible and is used to transmit braking force. Due to the high temperature generated by brake friction, there is enough fluidity, so it is very important to have a qualified brake fluid.

The tire is the only part of the car in contact with the ground, so the acceleration and deceleration of the car are provided by the friction between the tire and the ground, the size of the friction is determined by the contact area, the friction coefficient and the longitudinal force, the quality of the car remains the same, so the longitudinal force remains the same, therefore, the grip of the tire material and the width of the tire directly affect the braking distance, and the use of high-performance tires can effectively shorten the braking distance to a certain extent.

In fact, the braking distance is constrained by many complex factors, the main of which is braking force and vehicle weight. Secondly, the friction between the tire and the ground, in the case of no locking, is static friction, and when locking, it is sliding friction. Although sliding friction is related to the weight of the vehicle and the material of the tire, in general, static friction is greater than sliding friction.

This brings us to a topic that the automotive industry is currently concerned about: "brake locking". Since the static friction is greater than the sliding friction during braking, the optimal braking effect can be achieved when the tire is not locked when braking.

The overall weight of the car and the size of the car will affect the braking distance, so if you want the braking distance of the car to be short, you must strictly control the weight and size of the car.

<> I am a semi-trailer driver, I can tell people who have not driven a big car, the semi-trailer empty car can not brake at high speed, even if the brake trailer is stepped on, because there is no ballast wheels can not stop at all, only the brake white smoke is useless, the front brake of the semi-trailer is generally looser than the trailer, because the trailer head is tightened, once the brake trailer is likely to overturn the front of the vehicle.

Under the premise of heavy load of the whole car, the braking distance is long, it can be said that the greater the mass, the greater the inertia, it can also be said that even with ABS brakes is useless, because ABS is only an anti-lock braking system and will not shorten the braking distance, heavy vehicles in the case of braking drum brakes have actually stepped on the end, but because the mass inertia is too large, the friction between the brake drum and the brake pads can not make the vehicle stop immediately.

Semi-trailer in the event of an emergency will not rush to the direction, not because the life of passers-by or other people is not valuable, nor because the insurance is enough, but do not dare to rush the direction, not in a hurry to hit the direction may hit a person, but if the direction of the emergency once the vehicle is out of control or overturned, it is likely to be a sweep of a large area, I drive a 540 horsepower meter semi-trailer, you calculate the total length, more than 22 meters of total length, if on the road at a speed of 40 kilometers per hour mass 50 tons of lateral movement, how much do you think the lethality is? How many people can run out of this range, and the direction of this lateral movement is still uncontrollable.

The greater the mass, the longer the braking distance. Junior high school physics tells us that the heavier the moving object, the greater the inertia, and so on, but we haven't learned such a simple idea? When the speed of the vehicle remains the same, the friction between the tires and the road surface remains the same, because the friction between the brake pads and the brake disc of the car is limited, the heavier the vehicle, the faster the speed, the greater the inertia, and the longer the braking distance required.

It's the same with small cars, so when you're driving a long distance, take off all the things you don't use in the car to reduce the weight. Not to mention that it can save fuel, the braking distance can be shortened, and it may save your life.

First of all, freight transportation generally has relatively high requirements for time, especially when transporting some melons and fruits and fresh goods, it is necessary to grab time, and if there is a traffic jam on the way, the truck driver will try his best to grab time, at the same time, we also know that driving is actually very hard, especially like this full-time train driver who runs transportation, their hard work is also unimaginable, so they also want to deliver the goods as soon as possible when they run the car, and then they can rest early. Or you can run a few more jobs and earn a little more.

Purely mechanically speaking, the braking distance is directly related to the initial velocity, friction, air resistance and other factors, including the weight of the whole vehicle. In an ideal world, the braking distance is independent of the weight of the vehicle. In fact, the brakes can't brake, the speed is too fast, and the weight is a secondary reason.

In reality, the full load of the car should also take the inertia into account, the higher the quality, the faster the speed, the greater the inertia, so the braking distance and the weight of the car are still related.

It is related, if the car is very heavy, the braking distance will become longer, and if the weight of the car is lighter, the braking distance will become shorter, so you should pay attention to the weight of your vehicle in daily driving.

Matter. The braking inertia of a large car is greater than that of a small car, and the distance that needs to be braked is farther than that of a small car. The heavy weight of the cart will push the cart forward when braking urgently, and the braking distance required is relatively long.

I think the braking distance is related to the weight of the car, the greater the mass, the longer the active distance, this is the law of physics.

Summary. Hello, glad to answer for you. <>

When the vehicle brakes, if the brake does not feel braked, and then the brake is heavier, the car has the feeling of stopping, this situation belongs to the virtual position, the reason for the brake void may be because the brake fluid contains moisture and the brake is soft, and the other may be the brake pad thinning. When applying the brakes lightly, it may be caused by overuse of the brake pads. When the brake struts are lightly pressed, they become shorter and the roller rods reach their maximum, resulting in locking.

When the brakes are pressed very hard, because the strut shrinks too much and the roller rod exceeds the maximum, the roller rod will go to zero, so there is no brake.

When the vehicle is braking, if it feels like it is not braking when braking, and then the brake is heavier, the car has the feeling of stopping, what is the reason?

Hello, glad to answer for you. <>

When the vehicle is braking, if the brake does not feel braked, and then the brake is heavier, the car has the feeling of stopping, this situation belongs to the virtual position, the reason for the brake void may be because the brake fluid contains moisture to cause the brake to be soft, and the other may be the brake pad thinning. When applying the brakes lightly, it may be caused by overuse of the brake pads. When the brake strut is lightly pressed, the orange shield will be shortened and the roller rod will reach its maximum, resulting in locking.

When the brakes are pressed very hard, because the strut shrinks too much and the roller rod exceeds the maximum value, the roller rod will be zeroed, so there is no brake state car.

How to deal with it.

Hello, glad to answer for you. <>

Kiss and go to a professional repair shop for repair. <>

The repair is for sure, you guys suggest it, what to repair in the first part, and what to repair in the second part. If you recommend me to the Dust Ruler Celery Repair Shop to check the number of difficulties, I don't want to ask you!

Dear, here are two solutions for you:1Check the brake fluid to see if it contains moisture. 2.Check that the brake pads are not thinning. <>

If the above solutions cannot solve your problem, you need to conduct a systematic examination to determine the specific cause in order to prescribe the right medicine and formulate a reasonable solution. The cover source is <>