How much air can a basketball hold

Can a Basketball Explode? – Basketball Overtime

You may have seen extreme videos of basketballs being dropped from mammoth heights and exploding on the ground below. Was it because of the height that the basketball burst, or was it because of an outside issue? There are a few causes that may force a basketball to explode, more than just dropping it off from massive heights. 

Although rare, a basketball can explode if it is stored at a temperature that is too cold or if it is over-inflated to a considerable level beyond the standard PSI. An exploding basketball can be very dangerous and can cause harm to those nearby. Luckily, there are ways to avoid this occurrence.

From novices to NBA veterans, players of every level should know how to properly store a basketball when it is not in use. It does not matter what material the ball is made from or how much it cost—all basketballs should be stored the same way and inflated properly. Read on to find out how to protect yourself from an exploding basketball.  

A Basketball Can Explode If It Gets Too Cold

Temperature is the main culprit causing a basketball to explode. On the one hand, a basketball should not be kept in areas that are too cold because cold temperatures lower the pressure of the basketball. Therefore, a basketball left in the cold will lose air and end up deflating quickly. This is because of how gas molecules react in the cold. 

• When a basketball is left out in the cold, gas molecules contract and, as such, will have less energy and move more slowly.
• This leads to the basketball having lower air pressure, which leads to the ball bouncing lower.
• This is probably why you had a basketball that looked perfectly inflated but did not bounce high due to the cold temperature. 

Adding air can solve this problem, but how much air? This is where things get tricky because if you find your basketball has deflated due to being kept in the cold, you should never pump it up immediately. This is because pumping a basketball in the cold will cause the bladder to explode. Hot temps will not do this but could damage the ball. 

What about storing a basketball in higher temperatures? Conversely, higher temperatures will lead to higher air pressure since the gas molecules inside the ball are now expanding and moving around faster as the temperature increases. So, this time when you bounce the ball, it will bounce much higher because of the high temperature. 

An Over-Inflated Ball May Also Explode

Temperature is not the only reason a basketball can explode. If you overfill your basketball with an air compressor or similar device, too much air may cause the basketball to explode. You can test this by either rebounded it from six feet above the ground or by simply bouncing the ball—if it bounces to your chest, it has too much air. 

This was tested to the extreme when a group of men inflated their basketball to a whopping 50 PSI (for reference, the average is between seven and nine pounds per square inch). Then, they dropped the basketball off of a 415-foot dam with the hopes of the over-inflation causing an explosion. It did explode to an impressive extreme. 

Was the monstrous amount of air the cause of the basketball’s explosion? The team tested this theory by dropping a normally-inflated basketball off the same dam, and this time the drop was a success. The men even set a world record for a basketball being shot at the greatest height. Once the inflation was set normally, the ball did not explode. You can see the video below:

https://www.youtube.com/watch?v=O11AJg_IgII&ab_channel=HowRidiculousVideo can’t be loaded because JavaScript is disabled: Exploding Basketball! – How Ridiculous (https://www.youtube.com/watch?v=O11AJg_IgII&ab_channel=HowRidiculous)

This has also been tested only by overinflating the ball without dropping it from a height. The following video is one good example of it.

https://youtu.be/q-FrE49daUA?t=243Video can’t be loaded because JavaScript is disabled: EXPLODING – Football, Basketball, Soccer ball, Yoga ball & Space hopper (https://youtu. be/q-FrE49daUA?t=243)

How to Properly Inflate a Basketball

Obviously, you do not want to inflate your basketball to 50 or 60 PSI under normal circumstances. So, here are some tips to make sure your basketball is properly inflated and will not explode in the middle of your basketball game.

First, you need to make sure you have the right devices, including an inflation needle, air pump, and pressure gauge. 

• Connect an inflation needle to a basketball air pump and moisten the needle so that it will slide into the value with ease. This is so the needle does not damage or puncture the valve, which will cause it to leak air.
• Make sure the needle is fully inserted into the valve.
• Begin inflating the ball.
• If using a pressure gauge, this device can correctly manage the air to make sure the ball is inflated properly between 7 and 9 PSI.
• If you do not have a pressure gauge, you can test the pressure by dropping the basketball from your shoulders. If it bounces to your hip/waist level, it is properly inflated!
• Be sure to not only store your basketball in a warm, room temperature area but also inflate it in an area that is indoors so that the basketball does not explode.

If you are using an electric air pump, you need to make sure you are monitoring it closely since it fills up the ball quickly. If you overfill it too fast, it will explode and destroy the basketball.  

How to Handle a Basketball So It Does Not Explode 

The inside of a basketball has a rubber bladder that holds air when the ball is inflated based on the height of the basketball’s bounce. A basketball should be inflated enough so that it can rebound around 49 to 54 inches in height when it is dropped from six feet above the ground. Therefore, it is important to keep a basketball inflated properly. 

Basketballs usually range in size from 28.5 to 30 inches in diameter, and both men’s and women’s basketballs that are 29.5 inches are fully inflated when they weigh around one and ⅜ pounds. This is where maintaining your basketball at the proper amount of inflation gets tricky and could possibly even be dangerous. 

If you have a pressure gauge on your air pump, the recommended inflation of a basketball is usually around seven to nine PSI and typically in the middle, around eight and ½ PSI. This is usually the case for all types of basketballs, no matter the outside material. The outside of a basketball is made from different materials, such as: 

• Leather (only determined for college-level play)
• Rubber
• Synthetic
• Composition
• Full-grain hyde

The outside covering is also called the bladder, and no matter what the outside of a basketball is made of, there are certain circumstances in which a basketball’s rubber bladder could burst and cause a basketball to explode. The best way to avoid an exploding ball is to uphold these tips:

• Only store a basketball at room temperature.
• Keep it properly inflated based on the size of the ball and desired rebound height.
• Do not expose the basketball to harsh elements such as extreme cold or heat, direct sunlight, or rainfall.

Conclusion

Many players will purchase a basketball, keep it in the trunk of their car, and then only take it out for a pickup game in the local park. Now you know there is much more to storing a basketball after purchase. In addition, there are some easy tips to making sure your basketball is properly inflated so that it does not explode during that process.

It is not difficult to make sure a basketball is inflated and stored properly to ensure it will not explode upon impact. Just keeping your basketball stored at room temperature and monitoring its inflation can save you money from a destroyed ball as well as money from a possible trip to the hospital.

If you liked this post, be sure to check “If the Sun Was a Basketball How Big Would the Moon Be?” & “Can Basketball Players Wear Gloves?“.

Sources:

• http://www. madehow.com/Volume-6/Basketball.html
• https://basketball.epicsports.com/how-to-care-for-a-basketball.html
• https://www.wonderopolis.org/wonder/does-temperature-affect-the-bounce-of-a-ball#:~:text=This%20is%20because%20the%20gas,lead%20to%20a%20lower%20pressure.
• https://www.mensjournal.com/adventure/exploding-basketball-wasnt-part-of-teams-trick/

At What Psi Will A Basketball Explode?

NBA rules dictate that basketballs should be iNFLated to between 7.5 and 8.5 pounds per square inch. If the basketball is iNFLated below this level, it won’t bounce correctly. If it is iNFLated above this level, the basketball could be damaged or burst.

You asked, can basketballs explode? Although rare, a basketball can explode if it is stored at a temperature that is too cold or if it is over-iNFLated to a considerable level beyond the standard PSI. 2 = 267.64 square inches. A ball is iNFLated to about 8 PSI, so it would take 2141 pounds of force to crush a ball. Assuming we are on earth (which is debatable when it comes to Zion), that’s roughly a ton.

You asked, how do you burst a basketball?

1. Step 1: Attach the iNFLation needle to the air pump. How to attach the needle will depend on the type of air pump you are using.
2. Step 2: Moisten the iNFLation needle.
3. Step 3: Insert the needle into the valve.
4. Step 4: Begin iNFLating.
5. Step 5: Check the air pressure.

Amazingly, can you over pump a basketball? Ball Pressure In essence, the higher the air pressure in your basketball, the higher its bounce and otherwise. But, you have to be wary not to over-iNFLate your basketball to avoid the bladder breaking, which will negatively impact the consistency of the ball’s bounce or even cause leakage.What happened? An NBA regulation ball is iNFLated to between 7. 5 and 8.5 psi. By regulating a basketball’s air pressure, the NBA can ensure fair playing conditions. As this activity illustrated, the ball’s internal air pressure determines how it bounces.

Contents

• Can you pop a basketball?
• How do you tell if a basketball is properly iNFLated?
• What should I iNFLate my basketball to?
• Would a basketball pop in space?
• Does deflating a basketball damage it?
• How do you pump air into a ball without a needle?
• Can I pump my basketball at a gas station?
• Why is my basketball not bouncy?
• What happens when you iNFLate a ball too much?
• Does the air pressure in a basketball affect the bounce?

Can you pop a basketball?

No height on Earth. A basketball can withstand a speed greater than its terminal velocity. Terminal velocity is the speed at which deceleration from friction equals acceleration from gravity. As basketballs comprise a tough outer layer filled with air, their momentum will be insufficient to cause the skin to rupture.

How do you tell if a basketball is properly iNFLated?

If you don’t have a pump with a air pressure gauge, you can reasonably judge whether the basketball is properly iNFLated by this method: Hold the ball in front of your face and drop it… if it bounces up to your belt buckle, then it is properly iNFLated.

What should I iNFLate my basketball to?

Would a basketball pop in space?

Nothing, because it doesn’t happen. Vacuums don’t “suck.” Air under pressure blows. More specifically, higher pressure air pushes air into lower pressure spaces. The difference between the air pressure at any spot in Earth’s atmosphere and a spot just slightly above it is small.

Does deflating a basketball damage it?

A word of caution, deflating a nice leather or synthetic ball can possibly damage it. Deflating it completely can sometimes cause the leather or synthetic panels to separate and ruin the ball. … Just make sure you deflate it slowly and keep an eye on the ball. There is no need to worry about this for all rubber balls.

How do you pump air into a ball without a needle?

1. Put the end of the straw of the can into the basketball. It should fit quite easily.
2. Slowly start to press the trigger to allow the air to go inside the ball. Do it slowly and carefully for the best results. Once the ball is iNFLated to the desired amount, take out the straw and hit the courts!

Can I pump my basketball at a gas station?

Gas stations and the bike shops usually have air pumps available. If you know how to use them correctly with your ball needle, then yes, you can iNFLate your basketball at the gas station or the bike shop. … You would then press the trigger or allow the air to flow into the ball automatically if it’s an automatic pump.

Why is my basketball not bouncy?

If the basketball bounces up close to the chest, it means it has too much air. If it does not bounce up to the waist, it means there is not enough air. … Drop the ball from the 72 inch mark and the top of the basketball should be between the 49 and 54 inch mark you made. If it bounces higher than 54, it has too much air.

What happens when you iNFLate a ball too much?

The amount of air pressure a ball has is essential to the game. If it’s even slightly deflated it can make it harder to be accurate when kicking. If you iNFLate it too much, it can feel hard when you kick it or even burst. Too little or too much will definitely affect the bounce of it.

Does the air pressure in a basketball affect the bounce?

Yes, fully iNFLated basketballs do bounce better than flatter ones. When a ball has more air inside of it, there is more pressure which causes the material of the ball to be less floppy and deform less when bounced. Also, when there is more air there is a greater force acting against the ground upon impact.

Influence of air pressure on ball bounce height

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Chernyshev G. S. 1

1GBOU School 2120

Vagidova Z.R. 1

1GBOU School 2120

The author of the work was awarded a diploma of the winner of the III degree

Diploma of a student Certificate of the head

The text of the work is placed without images and formulas.
The full version of the work is available in the "Files of the work" tab in PDF format

Introduction

The ball is one of the most favorite toys for boys of all ages. There are many ball games such as football, volleyball, basketball, golf. Each game has its own ball. We know that there is air inside any ball. Therefore, the question arises: why don't all balls bounce?

Relevance: the ball is one of the most important attributes of games. Knowing the properties and types of balls helps in choosing them. Each person should have an idea about the physical phenomena and laws that he directly encounters in everyday life from childhood.

The purpose of is to study the effect of ball pressure on the height of the jump on the height of the first bounce.

Item is a basketball.

Item - air pressure in the ball.

To achieve this goal, it was necessary to solve a number of tasks:

1. Collect literature on the topic;

2. select research methods;

3. study the history of the origin of the ball, its varieties;
4. find out what sports games are played with the ball;
5. conduct an experiment explaining why the ball jumps to different heights after the amount of air in it changes;

6. draw conclusions.

Thanks to the following methods , a study was performed:

- work with Internet sources;

- work with literature;

- analysis;

- comparison.

Starting the study, we put forward the following assumption : if you release air from the ball, it will bounce lower.

Problem question of our study is: How does the amount of air in a basketball affect how high it bounces? How do basketball players determine how much air a basketball needs to have in order to play?

The novelty and practical significance of our study as a whole lies in the choice of the ball as the object of study.

1. Theoretical part.

1.1. Communication with history and science

In the encyclopedia "I know the world" it is said that the ball is one of the most ancient and favorite toys of all countries and peoples. In ancient Greece, it was considered the most perfect object, since it had the shape of the sun, which means (as the Greeks thought) it had its magical power. They sewed balls from leather and stuffed them with some elastic material, for example, moss or bird feathers. And later they guessed to inflate the leather ball with air. Such a ball was called "follis". Small follices were used for hand games, and large balls were used for games like football. Images of balls were found on the walls of Egyptian tombs, and during excavations of the burial places of the pharaohs, balls themselves were found, sewn from strips of leather or tree bark, and sometimes made of sandstone. The team games of the Egyptians with these items were dedicated to the gods, each team represented the interests of a group of celestials, the ball was driven into the gate with curved sticks. [1
And in ancient China they played ball, for example, by kicking it with their foot. The game eventually became a favorite folk entertainment, and in the 2nd century BC. included in the obligatory program of the solemn celebration of the emperor's birthdays. At the same time, instead of stuffing with bird feathers and animal hair, they learned to fill leather balls with air, developed rules and began to install gates on the playing field. The winners were honored with flowers, awarded with valuable gifts, and the losers were beaten with bamboo sticks.
In ancient Japan, too, they could not do without a ball. At the imperial court, team games were held to drive the ball into the goal for a certain time (measured by the hourglass), during the throwing it should not touch the ground.
In Russia, the balls were different. In excavations near Novgorod, balls of various sizes were found, sewn from leather. They were played by children in the 13th century. Peasant children played with light balls made of birch bark or heavy balls tightly rolled from rags. Even information about one of the games has been preserved: they put chicken eggs in a row and knocked them out with a ball. In the Khotkovsky nunnery near Moscow, balls were sewn from soft pillows, and pebbles wrapped in birch bark were put inside - it turned out to be a ball and a rattle at the same time. By the way, the origin of the word "ball" is associated with the words "soft, pulp, crumb." That is, the ball is a soft ball.

Modern balls vary in size and purpose. Different balls are used for playing volleyball, basketball, football, tennis, water polo, rugby and other games.

Each of them has its own story. The name of the game of basketball came from the English words "basket" - "basket" and "ball" - "ball". This game was invented by D. Naismith, a sports instructor from one of the American universities, in 1891. At his direction, a large fruit basket was nailed under the ceiling of the sports hall and a ball was thrown into it. When the players got tired of climbing for the ball every time, it occurred to someone to just knock the bottom of the basket out. At first, basketball players used leather balls, and then switched to rubber ones.

The basketball must be spherical and must be the specified shade of orange with the traditional pattern of eight inlays and black stitching. The mass of the ball (officially accepted size 7) is 567-650 g, the circumference is 750-780 mm. Smaller balls are also used: in men's team games, "size 7" balls are used, in women's team games - "size 6", in mini-basketball matches - "size 5".

1.2. Definition of concepts

Working with the dictionary of S. I. Ozhegov, we learned that a ball is an object for playing a solid or full ball made of an elastic material inside, which bounces off a hard surface upon impact. [2]

Pressure is a physical quantity equal to the ratio of the force acting perpendicular to the surface to the area of ​​this surface.

Unit of pressure - Pascal (Pa). Using also other pressure units: hectopascal (hPa) and kilopascal (kPa) 1 kPa = 1000 Pa 1 Pa = 0.001 kPa 1 hPa = Pa 1 Pa = 0.01 hPa

The force arising in the body as a result of its compression and stretching (deformation) tending to return the body to its original position is called the elastic force.

According to the free encyclopedia "Wikipedia" elasticity is the property of solid materials to return to their original shape during elastic deformation. Solid objects will deform after a force is applied to them. [3]

Basketball size

First of all, when choosing a ball, you should pay attention to the size of the basketball. Size 7 means you are holding a ball that is suitable for men. Its weight can range from 567 to 650 grams. Size 6 is primarily used in the games of teenagers under 16 and adult women's teams. In addition to the circumference, its weight has also been reduced - from 510 to 567 grams. Size 5 is officially suitable for training and games of junior teams, with a weight of 470-500 grams. Of course, in your training you can use the size of the ball that you have at hand. By learning to handle a size 7, you are more likely to master a size 6 with ease. Unfortunately, the inverse doesn't always work.

2. Practical

In the practical part, we had to solve the following problems:

- determine how the height to which the basketball bounces changes when the air pressure changes in it;

- build a graph based on the received data;

- draw conclusions based on the data obtained.

Different manufacturers measure pressure in different units, psi (pounds per square inch), bar (pressure unit approximately equal to one atmosphere), kgf/cm² (one kilogram of force per square centimeter), kPa (kilopascal). In the United States of America, the pressure inside the ball is usually measured in pounds per square inch (lb/dm ² ).

We experimented with the amount of air in a basketball, but for measurement, we used units that are accepted in our country, namely kilopascals (kPa).

We measured the amount of air in a basketball and then used a distance sensor to measure how high the ball bounced.

Materials and equipment:

- Computer with the Logger Lite program installed on it;

-Go!Link adapter;

- Gas pressure sensor;

- distance sensor;

- Basketball;

- Stopper with needle, stem and tube;

-Measuring ruler.

Our experiment was carried out according to the following algorithm:

To configure the sensors for data collection, you need:

Check distance sensor connection to computer.

Set the distance sensor switch to position Normal .

Make sure the pressure sensor is connected to the adapter and the adapter is connected to the computer.

Start the Logger Lite program.

Open file for this experiment Air Ball (Air ball) .

Then did the following:

They took a basketball.

Reset the pressure sensor by pressing the Reset button on the toolbar. Next, the sensor measured the pressure in the same way as the measuring device on a bicycle pump.

Moistened the needle attached to the pressure transducer and inserted it into the ball.

Recorded data in the first line of the column "Actual pressure" of the data table.

Attached the distance sensor at a height of 2.3 m.

To collect data, did the following:

Hold the ball directly under the sensor so that the space between the ball and the sensor is about 15 cm.

Button pressed Data acquisition . Hearing the click of the sensor, they released the ball from their hands so that it hit the floor and bounced. No need to throw the ball with force!

Next, press the button View, to determine the position of the floor relative to the sensor and the distance to the ball at the top of the rebound ball #1. We recorded the obtained data in a table.

Next, we gradually reduced the pressure in the ball:

Moistened the needle attached to the pressure transducer and inserted it into the ball.

Watched the pressure reading on the screen.

Released some air.

Watch the pressure reading on the screen until it drops by 20 kPa (for the first time, the pressure will drop from 124.88 kPa to 105.79 kPa).

When the pressure dropped by 20 kPa, twist the connection tip so that no more air escapes.

Recorded the value in the second line of the "Actual pressure" column of the data table.

Repeat steps 3-7 for 80 kPa, 60 kPa, etc. until you reach a test where the pressure was 5 kPa.

Data table (graphs are in the appendix):

Drop height 2.321 - ball distance 0.214 m = 2.107

Pins:

There is a pattern of change in the height of the rebounds with a decrease in pressure in the ball - the height of the rebounds decreases. The lowest air pressure in the ball allowed for playing basketball: 80 kPa.

Conclusion

What is basketball training without the main attribute of the game - a basketball? It is the basketball that gives us the opportunity to enjoy the gameplay in all its diversity.

Often when inflating a basketball, the question arises whether to inflate it more or less. We have to resort to the help of the Internet in search of information regarding this issue. We decided to answer the question, what is the optimal pressure should be in a basketball, since with the wrong level of pressure, the wear resistance of the chamber increases, which may simply not withstand and burst; there is a risk of injury; unpredictable flight path. The lowest air pressure in the ball allowed for playing basketball: 80 kPa.

Our study was carried out using Logger Lite software, Go!Link adapter, gas pressure sensor, distance sensor.

To achieve the goal, tasks were set that were successfully solved. To begin with, the literature on this topic was collected. Its analysis is presented in the theoretical part.

Getting to the practical part, we have identified research methods. Thanks to them, our study "The effect of air pressure on the height of the ball rebound" was carried out.

The hypothesis that we put forward at the beginning of the work was confirmed.

Having completed this study, we have developed a memo for fans of the game of basketball ( Appendix 2 ).

References:

I know the world. Sports: children. encyclopedia. - M.: AST: Astrel: Transitbook, 2006 - 382.

Ozhegov S.I. Explanatory Dictionary of the Russian Language, M .: LLC "A TEMP", 2008. p. 810

[Electronic resource] Access mode: Wikipedia - Head. from screen

[Electronic resource] Access mode: https://sportyfi.ru/basketbol/myach/kak-nakachat/ Head. from screen

Appendix 1

Experiment 1

Height

Pressure

Experiment 2

Height

Pressure

Experiment 3

Height

Pressure

Experiment 4

Height

Pressure

Experiment 5

Height

Pressure

Experiment 6

Height

Pressure

Experiment 7

Height

Pressure

Experiment 8

Height

Pressure

Annex 2

Instruction for inflating a basketball

Note:

The pressure in the ball is quite strongly influenced by the ambient temperature and atmospheric pressure.

It is better to inflate the ball directly where games or training are planned.

The ball must be inflated correctly! Before pumping, you need to shake the ball so that the chamber is in a vertical position, below the valve opening. Then pump it up.

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How to choose a basketball?

Basketball is a fast and dynamic sport. To enjoy the gameplay, you need to buy high-quality inventory. Basketball equipment is presented in a wide range. Many well-known brands are engaged in the manufacture of balls for this sport. Which option to choose? Consider the main criteria.

Types of basketballs

One of the most important selection criteria is the purpose of the ball. With this, you need to start looking for a suitable projectile, we will start with this, in total there are three types:

• for the hall;
• for the street;
• universal.

The Indoor Basketball has excellent grip on parquet. Made from nat. leather or synthetics. Professional athletes choose models with a composite coating. Microfiber provides a comfortable grip. The material muffles impacts during the dribble. It is forbidden to play on asphalt sites, as in such conditions the projectile will very quickly lose all its qualities.

For the open field (outdoor) use shells made of synthetic raw materials. This composition makes them extremely resistant to wear. Additional surface treatment enhances grip. The ball is easy to control.

Universal shells are made of rubber. It is resistant to wear, behaves normally on parquet and can serve for quite a long time on open street areas. Some are covered with synthetic or composite materials. Manufacturers produce goods for sites with a smooth, wooden, rubber coating.

How to decide on the material

To understand how to choose a basketball, take into account the raw materials used in production. Durable versatile basketballs are made from artificial materials. Many professional indoor balls are made from composite leather.

Genuine leather is considered the best material for the hall. The leather ball is an essential element of any professional basketball tournament. If you see the marking “Supreme Leather” on such a ball, then the manufacturer used premium leather.

Quality check

The first evaluation method is rebound. A correctly inflated ball will bounce to a height of approximately 130 centimeters. There is an alternative way. Raise the professional ball to head level, and then release it. He should bounce to the waist. Look at the quality of the nipple.

Do not sit on it or kick it to keep its original shape. Careful use preserves the correct rebound during the dribble. Elasticity is another indicator of quality. The ball must not become soft after a short play. Pump up periodically, but use only a special nozzle, and not a football needle.

Size

What size basketball should I buy? It all depends on the specifics of use. Marking No. 7 - the largest ball is intended for competitions of men's teams. The table shows absolutely all existing sizes:

Size