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JohnDubYa
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Suppose you have the air inside a tire traveling down the length of the tire (that is, in circular motion inside the tire). Now as the air slows down inside the tire, what happens to the tire pressure?
JohnDubYa said:Suppose you have the air inside a tire traveling down the length of the tire (that is, in circular motion inside the tire). Now as the air slows down inside the tire, what happens to the tire pressure?
There are several factors involved in this situation...so its hard to tell now. You have bernouli affects, centripital acceleration, friction against the ground.
Let's think about this, the car is moving, since air has very little friction, it takes a long time for it to start circulating. When it circulates, you have the air pressure drop from bernouli affects.
The centripital force makes the air molecules pile up on the bottom of the tire, therefore, having a higher pressure.
If you have seen top fuel drag cars there rear tyres are virtually flat until they wheel spin and heat up (which increases the pressure). when they cool down they diflate again.
cyrusabdollahi said:Why would the air go round with the tire?
The air inside a tire can slow down due to a decrease in temperature, a decrease in volume, or a combination of both. As the temperature drops, the air molecules lose energy and move slower, causing a decrease in pressure. Additionally, when a tire is not used for an extended period of time, the air can slowly leak out due to the permeability of the tire material.
According to Charles' Law, the volume of a gas is directly proportional to its temperature. This means that as the temperature decreases, the volume of the air inside a tire also decreases, resulting in a decrease in pressure. Conversely, as the temperature increases, the air molecules speed up and the pressure inside the tire increases.
Maintaining the correct tire pressure is important for several reasons. First, it ensures that your tires wear evenly, which can extend their lifespan and save you money in the long run. Additionally, the correct tire pressure can improve fuel efficiency and handling, making your vehicle safer to drive. Lastly, over or under-inflated tires can cause damage to your vehicle's suspension and other components.
It is recommended to check your tire pressure at least once a month, or before any long road trips. You should also inspect your tires for any signs of damage or leaks during this time. Additionally, extreme weather conditions, such as very hot or cold temperatures, can cause changes in tire pressure, so it is important to check them more frequently during these times.
To properly inflate your tires, you will need a tire pressure gauge and an air pump. First, remove the valve cap and place the pressure gauge onto the valve stem. The gauge will provide a reading of the current tire pressure. If the pressure is too low, use the air pump to fill the tire to the recommended pressure. If the pressure is too high, release air from the tire using the small pin on the back of the valve. Once the tire is at the correct pressure, replace the valve cap. Repeat this process for all four tires.