Why does the ground clearance decrease when the car is driving at high speeds

As far as I know, according to the aerodynamic point of view, when the car is stationary or driving at low speed, the air velocity passing through the car is small, and the pressure on the roof and the bottom of the car is basically the same, when the car is running at high speed, the air flow speed at the bottom of the car is larger, the static pressure on the bottom of the car is reduced, and the roof is mostly streamlined and can be approximately seen to be in a large space, so the pressure changes little, and the uneven pressure difference between the upper and lower sides causes the distance between the car chassis and the ground to decrease, and the greater the speed, the more unbalanced it is. This is the opposite of the design of the aircraft, which uses the lower part to be streamlined, and the upper part is flat to create a large pressure difference in flight and provide lifting force.

According to the physics problem you mentioned, it should be increased. Not so profound. When the car is designed, the chassis is horizontal, the front is flat, and the cab is high, so that when driving at high speed, the air resistance will have a downward force, so that the car will shrink and the ground clearance will be reduced.

The purpose of this design is to make the car have a good landing force and be easier to control when driving at high speeds.

To be precise, it is designed by the automobile manufacturer, the principle of air flow. On the other hand, if the speed of the car is higher and the higher it is above the ground, isn't it an airplane in the end?

The conclusion upstairs was correct, but the reason was wrong, and then it was actually adopted by the landlord, speechless.

Experiments have shown that in gases and liquids, the higher the flow velocity, the lower the pressure.

When the car is moving, the air flow at the bottom of the car is straight, the flow distance is close, and the flow speed is slow. The airflow from the top of the car needs to flow through the curved body, which is a long distance and faster than the bottom of the car. Therefore, when the car is moving, the pressure under the car is strong and the pressure on the roof is small, which will form an upward lifting force and reduce the pressure of the car on the ground.

Yes, as you said, the pressure decreases. Because when the car is driving at high speed, the air flow velocity under the car is large, and there will be a supporting force on the car upward, that is, air buoyancy. So the pressure is reduced. Do you understand?

There is an air flow under the car, similar to the force of lifting upwards, which is similar to the principle of an airplane taking off, so many sports cars have a rear wing, which can create a downforce at high speeds to maintain balance.

Affected by aerodynamic forces, mainly the ground effect, the upward lift of the main generation, so that the adhesion of the wheels is reduced. Of course, there are other factors.

This is a change in pressure caused by the air flow that causes a car traveling at high speed to experience an upward force exerted by an atmosphere. It is what we usually understand that the car will "flutter" if it drives too fast.

The streamlined design of the car body is similar to the wing of an airplane, the length of the upper surface of the car is greater than the lower surface, and the air flow velocity through the upper surface is greater than the air flow through the chassis at the same time, and the greater the flow velocity, the lower the pressure. Therefore, the pressure on the upper surface of the car traveling at high speed is less than the pressure near the chassis. It is this pressure difference that creates an air buoyancy that causes the car to rise.

g = fn + f atmosphere hence fn

Smaller, when the car is driving at high speed, the air velocity on the roof is greater than that at the bottom of the car, and the pressure is small at the place where the flow velocity is large from the nature of atmospheric pressure, so the pressure of the car will become smaller.

(1) When the car is driving at high speed, the pressure is small because the air flow velocity above the car is large, and the air flow velocity under the car is small and the pressure is strong, so the car is subjected to upward lift at this time; The pressure on the ground is less than its own gravity (2) When braking urgently, the car has to slide forward for a certain distance before it can stop, which shows that the car has inertia, and also shows that the force can change the motion state of the object; (3) push the car hard, but the car is stationary, then the thrust of the car is equal to the friction force So the answer is: (1) less than; The gas flow velocity on the upper surface of the car is large, and the position of the gas flow velocity is larger, the pressure is smaller, resulting in an upward pressure difference; (2) inertia; motor status; (3) Equals

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When the car is stationary, the pressure on the ground is greatest, and the weight of the whole vehicle is distributed on the ground through the tires.

When the car is moving, the inertia increases the forward impulse, and the pressure on the ground decreases;

The air velocity above the car is high, the air velocity below is slow, the pressure difference will produce lift, and the pressure on the ground of the car will become smaller, and it will become smaller and smaller as the speed of the car increases.

At high speeds, the velocity of the air on the roof is greater than that of the air underneath the car due to the streamlined shape of the car. According to fluid mechanics, an upward pressure is generated, which results in a decrease in the net force to the bottom surface.

Because the pressure on the ground of the convoy at rest is equal to the gravitational force of the car; When the car is driving fast, the flow velocity of the air above the car is greater than that below the car, the pressure above the car is less than that under the car, so the car may "fly", and the pressure on the ground is naturally less than the pressure on the ground when it is stationary.

Fast enough to break away from Earth's gravitational pull and fly into space.

Cars will float at high speeds, one is because the speed is too high, and the other is the chassis suspension design problem of many Japanese cars. Bad grip. The drag coefficient is too large. There is a problem with the body itself, such as the ball head such as the lower arm or the steering lever.

As long as you drive below 120.

At high speeds, of course.

It's no problem.

If it is more than 140, the general car will have blurred vision, if there is a safety issue.

Mostly your own.

There will be no problem with the car.

If it's a problem with the car, it doesn't matter how fast you're driving, unless you're a 200 mixed person.