Usually for standard basketballs it's about 7-9 lbs.
Air.
.....
up to about 5 pounds
Air pressure in a room is less than that of a basketball since it does not crush the basketball. Think of the crushed can experiment. If you empty a soda can, flip it upside down, put it (carefully) on a boiling pot of water, the can will fill with hot air. You then transfer the can on a container with cold water (making sure the opening of the can is covered with the cold water). You should see the can implode or at least the outside air pressure (since it's greater than that of the air pressure in the can) crush the can. Opposite of the basketball.
As air fills the basketball, the pressure expands outward to make the outside of the ball feel harder. The valve on the outside of the ball allows the pump to put air in prevents air from escaping.
i know that a basketball will because if it has nothing in it, it won't bounce. right? but when you put more helium in, it will bounce high. but if you put to much in it, it might explode!!!!!!!!!!!!!!!!!!
Simply... the valve is a one way valve that lets in air one way but does not let air out. It it basically a hole with a flap on the inside. The flap closes when pressure is pushing out but opens when pressure is pushing in.. like when you put in the pump nozzle.
If a basketball is flat, it gets stuck on the ground and goes nowhere. If you put alot of air in it, it might explode, so don't put too much. Put just about alot but not too much, the perfect amount almost, where you can poke it a little bit, and it goes really high.
Heavier. You are adding the miniscule weight of the air. If you added Helium it would become lighter.
Those are actually to let air pressure out that builds up while riding. If you add air to them they will get really stiff.
Put a air pump in the end of the bat then start pumping this will get the pressure of your bat up.
Put a air pump in the end of the bat then start pumping this will get the pressure of your bat up.
That all depends how much helium you put in it. A basketball should be able to take the same amount of pressure, whether it's pressure from air or helium. So, if you inflate it only to the recommended pressure, it should be a problem. The same amount of pressure of helium will be less mass, so in the end the basketball will be lighter, as you would probably expect, by a very small amount.
Most of these require 5 psi minimum Then pressure up to level vehicle. Do not exceed maximum allowable pressure. (usually 60 psi)