how do I hook up a ball to a helium pump to pump it up?
I assume you mean heilum tank. find a bicycle pump, take the hose off of the pump, attach the hose to the tank with a hose clamp. use an adapter on the nossel to fill the balls. adapters can be bought at most sporting goods stores. how ever if your goal is to make the sports balls float remember sports balls are not baloons and may be to heavy to float. also heilum is only lighter than air because it is less dense than the gases that make up our atmosphere. if you pressurize the helium to the same psi as regular air would be in the ball then it would be the same density and act the same. but none the less good luck and please let me know how it works out.
I guess that the helium might not stay inside the ball for very long. Because helium atoms are smaller than air. Balloons also loose helium faster than they loose air. It will probably only work for a couple of hours. After that, the ball might become soft again.
Doing it for fun and a little prank. If it does make a difference. I'm going to show the coah my puting distace, lol.
u should have enough energy to do it